Phuket mar. biol. Cent. Res. Bull. 75: 27–44 (2018) 3

NEW RECORDS OF AMMONOIDS (CEPHALOPODA: AMMONOIDEA) FROM PENINSULAR THAILAND

Kittichai Tongtherm1, Jaruwat Nabhitabhata2*, Paladej Srisuk3 and Thammarat Nutadhira4

1Department of Biology, Faculty of Science, Prince of Songkla University, Hatyai, Songkhla 90112, Thailand 2Excellence Centre for Biodiversity of Peninsular Thailand (CBIPT), Faculty of Science, Prince of Songkla University, Hatyai, Songkhla 90112, Thailand 3Palaeontological Research and Education Center, Mahasarakham University, Kantarawichai, Mahasarakham 44150, Thailand 4Natural History Museum, Kampangwittaya School, La-gnu, Satun 91110, Thailand *Corresponding Author: [email protected], [email protected]

ABSTRACT: Four taxa of ammonoid cephalopods have been discovered in the Devonian, Carboniferous, Permian and Triassic strata in Peninsular Thailand. All taxa are new records of ammonoids in Thailand. They comprise the Devonian ammonnoid ?Parawocklumeriidae gen. et sp. indet., the Carboniferous form Goniatites cf. eganensis Korn and Titus, 2011, the Permian ammonoid Cyclolobus sp. indet. from Satun province, on the western part of the peninsula, and the Triassic ammonoid Ceratitina gen. et sp. indet. from Phatthalung province, on the eastern part of the peninsula.

Key words: new records, ammonoids, Cephalopoda, peninsular Thailand.

INTRODUCTION  IURP .RK 0DSUDR R൶FLDOO\ .R 3UDR  Phuket province. However, this species name Several authors have documented ammonoids might currently be a synonym of a marine caeno- IURP 7KDLODQG 7KH ¿UVW UHFRUG RI DPPRQRLG gastropod, Hipponix antiquatus (Linnaeus, 1767) cephalopod fossils in Thailand was reported by of the family Hipponicidae (WoRMS, 2017). All Reed (1920), based on specimens from Carbonif- published occurrences are listed in Table 1. Am- erous strata in Srinagarindra district, Phatthalung monoids are overall rather rare in Thailand, thus province, on the eastern part of the peninsula (Ta- making almost every new record relevant for a ble 1). The record comprised three taxa, Goniatites publication. (?) sp. (as Glyphioceras (?) sp.), Prolecanites (?) This study focuses on identification and sp. and PronoritesD൵cyclolobus (Phillips, 1836). description of newly recorded ammonoids, adding Later, Suvatti (1938; 1967) reported an ammonoid information to previous records of cephalopod fauna of unknown age: Amalthea antiquate Linnaeus, in Peninsular Thailand. 28

Phuket mar. biol. Cent. Res. Bull. 2

Table 1. Previous records of ammonoids in Thailand.

Locality Age Taxon References (Province, Region) - Amalthea antiquate Linnaeus, 1767 Phuket, Suvatti (1938; (Gastropod?) Southwestern 1967) Carboniferous Glyphioceras (?) sp., Prolecanites (?) sp., Phatthalung, Reed (1920) Pronorites D൵. cyclolobus (Phillips, 1836) Southeastern Goniatites sp. (as Glyphioceras (?) sp.), Phatthalung, Pitakpaivan et al. Prolecanites (?) sp. Southeastern (1969) Pronorites D൵. cyclolobus (Phillips, 1836) Stenopronorites uralensis (Karpinsky 1889) Mae Hong Son, Ingavat-Helmcke (as Pronorites D൵. uralensis Karpinsky 1889) Northern (1994) Protocanites sp. Mae Hong Son, Ishibashi et al. Northern (1997) Branneroceras sp., Bisatoceras sp., Loei, Northeastern Neogastrioceras sp., Syngastrioceras sp. Bisatoceras sp., Neogastrioceras sp., Loei, Northeastern Fujikawa et al. Syngastrioceras sp., (1999) Branneroceras branneri Smith, 1896, Diaboloceras involutum Nassichuk 1975, Cravenoceras (?) sp. Mae Hong Son, Fujikawa and Northern Ishibashi (1999 cited after Fujikawa and Ishibashi, 2000) Branneroceras (?) sp., Cravenoceras (?) sp., Loei, Northeastern Gastrioceras spp., Paralegoceras sp., Pseudoparalegoceras sp. Stenopronorites cf. uralensis (Karpinsky, Satun, House (2004) in 1889), Southwestern Wongwanich et al. Syngastrioceras sp. indet., ?Glaphyritid indet. (2004) Neogluphioceras subcirculare (Miller, 1889) Satun, Tongtherm et al. Southwestern (2016) Permian AgathicerasD൵. suessi Gemmellaro, 1887 Loei and Pitakpaivan et al. Khon Kaen, (1969) Northeastern; Propinacoceras sp. Khon Kaen, Northeastern Agathiceras mediterraneum Tumanskaya, Nakhon Glenister et al. 1949, Ratchasima, (1990) Miklukhoceras cf. pamiricum Pavlov, 1967, Northeastern Perrinites cf. hilli Smith, 1903 Prostacheoceras cf. oshense (Toumanskaya, 1938) 3 30

Phuket mar. biol. Cent. Res. Bull. 2

Locality Age Taxon References (Province, Region) AgathicerasD൵. suessi Gemmellaro, 1887 Loei, Northeastern and Phatthalung, Southeastern Agathiceras mediterraneum Tumanskaya, Nakhon Zhou and 1949, Ratchasima, Liengjarern (1997) Miklukhoceras cf. pamiricum Pavlov, 1967, Northeastern Perrinites cf. hilli Smith, 1903, Prostacheoceras cf. oshense (Tumanskaya, 1938) Huananoceras sp., Protoceras sp., Lampang, Fujikawa and Pseudotirolotes sp., Northern Ishibashi (1999 ']KX¿WHVD൵. spinosus Shevyrev, 1965 cited after (as Paratirolites D൵. spinosus Shevyrev, 1965), Fujikawa and Pseudogastrioceras D൵. szechuanense Chao, Ishibashi, 2000) 1965, 7DSDVKDQLWHVÀRULIRUPLV Zhao and Liang, 1965 Tapashanites changxingensis , Zhao, Liang, and Zheng, 1978 Tapashanites sp. , Xenodiscus sp. Aganthiceras sp., Prostacheoceras spp., Loei, Northeastern Zhou and Akmilleria electraensis (Plummer and Scott, Liengjarern (2004) 1937), Bamyaniceras loeiense (Ishibashi, Fujikawa and Nakornsri, 1996), Metaperrinites ishibashi Zhou and Liengjarern, 2004, Neopronorites cf. darvasicus Leonova, 1988, Properrinites boesei Plummer and Scott, 1937, Popanoceras cf. sobolewskyanum (de Verneuil, 1845), (as Popanoceras cf. sobolewskyanus (de Verneuil, 1845)), Sicanites cf. notabilis Ruzhencev, 1940 Agathiceras mediterraneum Toumanskaya, Nakhon 1949 Ratchasima, Neocrimites nalivkini (Toumanskaya, 1949), Northeastern Parapronorites rectus Leonova, 1989, Perrinites tardus Miller and Furnish, 1940, Prostacheoceras alter Leonova, 1989 Perrinites gouldi Miller and Furnish, 1940 Saraburi, Central

Agathiceras suessi Gemmellaro, 1887, Phatthalung, Fujikawa et al. Agathiceras girtyi Böse, 1919, Southeastern (2005) Aganthiceras? sp., Miklukhoceras sp., Neocrimites sp. Tapashanites yaowalakae Ishibashi, Nakornsri Lampang, DMR (2006) and Nagai, 1994 Northern 31

New records of ammonoids (Cephalopoda: Ammonoidea) from Peninsular Thailand 3

Locality Age Taxon References (Province, Region) Bamyaniceras loeiense (Ishibashi, Loei, Northeastern Fujikawa and Nakornsri, 1996), (as Artinskia loeiensis Ishibashi, Fujikawa, and Nakornsri, 1996), Metaperrinites? sp., Agathiceras sp. Loei, Northeastern Fujikawa and Ishibashi (2006) Triassic Balatonites sp. indet. I, II, Beyrichites sp., Lampang, Kummel (1960) Sturia sp. indet., Northern Cladiscites cf. beyrichi Welter, 1914, Joannites cf. klipsteini (Mojsisovics, 1875), Lobites cf. ellipticus (Hauer, 1860), Ptychites cf. rectangulatus Kraus, 1916, Trachyceras (Paratrachyceras) cf. regoledanum (Mojsisovics, 1869), Tropigymnites cf. chandra (Diener, 1895) Beyrichites sp. indet., Balatonites sp. indet. I, II, Lampang, Pitakpaivan et al. Sturia sp. indet., Northern (1969) Cladiscites cf. beyrichi Welter, 1914, Joannites cf. klipsteini (Mojsisovics, 1875), Lobites cf. ellipticus (Hauer, 1860), Ptychites cf. rectangulatus Kraus, 1916, Trachyceras (Paratrachyceras) cf. regoledanum (Mojsisovics, 1869), Tropigymnites cf. chandra (Diener, 1895) BalatonitesD൵. balatonicum (Mojsisovics, Northern Komalarjun 1873), and Sato (1964 Balatonites sp., Leiophyllites sp., cited after Ophiceras sp., Chonglakmani, ClionitesD൵. barwicki Johnson, 1941, 1983) Joannites maehuatensis Chonglakmani, 1983, Joannies nonghoiensis Chonglakmani, 1983, Leiophyllites cf. pitamaha Diener, 1895, Ophiceras cf. chamunda Diener, 1897, Ophiceras (Discophiceras) sp. nov. cf. subkyokticum Spath, 1930, Paratrachyceras cf. regoledanum (Mojsisovics, 1931), Protrachyceras cf. longobardicum (Mojsisovics, 1882), Sirenites senticosus (Dittmar, 1866), Trachyceras cf. aon (Munster, 1834) Beyrichites cf. srikanta (Diener, 1895), Lampang, Beyrichites sp., Sturia sp. indet. Northern Trachyceras sp. Tak, Western 32

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Locality Age Taxon References (Province, Region) Anatomites D൵. rotundus Mojsisovics, 1893, Northern Chonglakmani Anatomites sp., Anatomites sp. indet., (1983) Balatonites D൵. balatonicus Mojsisovics, 1873 (as Balatonites D൵. balatonicum Mojsisovics, 1873) Buchites sp. indet., Beyrichites ? sp., Beyrichites cf. srikanta (Diener) Griesbachites sp. indet., Hollandites cf. ravana (Diener) Hollandites cf. roxburghii (Diener) Hollandites cf. visvakarma (Diener) Joannites maehuatensis Chonglakmani, 1983 Joannies nonghoiensis Chonglakmani, 1983, Juvanites cf. idenburgi Welter Leiophyllites cf. pitamaha Diener, 1895 Lobites cf. ellipticus Hauer, 1860 Ophiceras (Discophiceras) cf. subkyoticum Spath, 1930 Ophiceras (Lytophiceras) cf. chamunda Diener Protachyceras cf. longobardicum Mojsisovics, Paratrachyceras cf. regoledanum Mojsisovics, Paratrachyceras sp., Sturia sp. indet., Ptychites cf. rectangulatus Kraus Sirenites (Sirenites) senticosus Dittmar, 1866 Trachyceras cf. aon Munster, 1834 Tropigymnites cf. chandra (Diener) Zestoceras barwicki Johnson, 1941 (as Clionites D൵. barwicki Johnson, 1941) Choristoceras ammonitiforme Guambel, Tak, Western 1861, Tmetoceras dhanarajatai Sato, 1964, Trachyceras sp. Aplococeras parrus (Smith, 1914), Phatthalung, Tongtherm et al. Arianites musacchi Arthaber, 1911, Southeastern (2016) Audaxlytoceras audax Meneghini, 1881, Bosnites clathratus Hyatt& Smith, 1897, (SLFHOWLWHVJHQ¿L Arthaber, 1911, Eutomoceras D൵. laubei Meek, 1877, Eutomoceras dunni Smith, 1904, Eutomoceras sp. A, Eutomoceras sp. B, Eutomoceras sp. C, Eutomoceras sp. D, Halilucites sp. A, Halilucites sp. B, Hungarites sp. A, Protetragonites sp. A, Ussuria sp. A, Indoceltites trigonalis (Diener, 1908), Juvenites canadensis (Tozer, 1961), Kellnerites bosnensis (Hauer, 1888), Ophiceras connectens Schindewolf, 1954, Paracrochordiceras sp. indet., Ussuria sp. indet., Xenodiscoides perplicatus (Frech, 1905) 33

New records of ammonoids (Cephalopoda: Ammonoidea) from Peninsular Thailand 3

Locality Age Taxon References (Province, Region) Triassic- Phylloceras sp. Northern Komalarjun Jurassic and Sato (1964 cited after Chonglakmani, 1983) Brown et al. Jurassic Erycites sp., Ludwigia sp., Tmetoceras sp. Tak, Western (1951) Tmetoceras dhanarajatai Sato, 1964 Tak, Western Sato (1964 cited after Pitakpaivan et al., 1969) Choristoceras ammonitiforme Zambelli, 1986, Tak, Western Komalarjun Graphoceras concavum Sowerby, 1815, and Sato (1964 Erycites cf. fallifax Arkell, 1957, cited after Docidoceras sp., Epimayaites sp., Chonglakmani, Haugia (?) sp., Erycites sp., 1983) Eudmetoceras sp., Ludwigia sp., Lytoceras sp., Onychoceras sp., Pseudolioceras sp., Tmetoceras sp. Tmetoceras regleyi (Dumortier, 1847) Tmetoceras dhanarajatai Sato, 1964 Docidoceras (Docidoceras) longalvum (Vacek, Northern 1886), Epimayaites cf. falcoides Spath, 1928, Graphoceras sp., Sonninia (?) sp. Lytoceras ophioneum cf. toarcense Geezy, 1967 Erycites sp., Graphoceras concavum (Sowerby, Tak, Western Pitakpaivan et al. 1815), (1969) Tmetoceras dhanarajatai Sato, 1964, Tmetoceras regleyi (Dumortier, 1874) Pseudolioceras, Tmetoceras, Epimayaites Tak and Kobayashi (1978) Kanchanaburi, Western Docidoceras (Docidoceras) longalvum (Vacek, Northern Chonglakmani 1886), (1983) Epimayaites cf. falcoides Spath 1928, Epimayaites sp., Erycites cf. fallifax Arkell, 1957, Erycites sp. Eudmetoceras (planamatoceras) sp., Ludwigia sp., Graphoceras concavum Sowerby, 1815, Graphoceras sp., Glochiceras ? sp., Haugia ? sp., Onychoceras sp., Lytoceras (Alocolytoceras) ophioneum cf. toarcense Geezy, 1967 Ludwigia sp., Phylloceras sp., Pseudolioceras sp., Soninia ? sp., Tmetoceras dhanarajatai Sato, 1964, Tmetoceras cf. dhanarajatai Sato, 1964 Tmetoceras regleyi (Dumortier, 1847) 34

Phuket mar. biol. Cent. Res. Bull. 2

Locality Age Taxon References (Province, Region) Dactylioceras sp., Dactylioceras ? sp., Tak, Western Meesook and Docidoceras sp., Grant-Mackie Eleganticeras sp., Eutdmetoceras sp., (1994) Leioceras sp., Onychoceras sp., Ospirioceras bicarinatum (Zittle), Pleydellia sp., Pseudolioceras sp. Dactylioceras sp., Dumortieria sp., Mae Hong Son, Graphoceras sp., Tmetoceras sp. Northern Docidoceras sp., Eutmetoceras sp. Chumporn, Southern Tmetoceras dhanarajatai Sato, 1964 Tak, Western DMR (2006) Catulloceras sp. Tak, Western Hirsch et al. (2008) Tmetoceras sp., Harpoceras sp. Tak, Western Yamee et al. (2008) Abbasites sp., Dumortieria sp., Tak, Western Kozai et al. (2011) Protogrammoceras sp., Pleydellia sp., Catulloceras perisphinctoides Gemmellaro, 1886, Malladaites D൵. pertinax (Vacek, 1886), Malladaites vaceki Linares, Sandoval and Mouterde, 1896, Riccardiceras longalvum (Vacek, 1886), 6SLQDPPDWRFHUDVVFKLQGHZRO¿ Linares, Sandoval and Mouterde, 1896, Brasilia sp. (as Vacekia sp.)

Table 2. Localities and stratigraphy considered in the present study in Peninsular Thailand (Wongwanich et al., 1983; Ampornmaha, 1995; Sardsud, 2001; DMR, 2001, 2013; Agematsu et al., 2006).

Province District Locality Age Group Formation Phatthalung Muang Khao Ok-thalu Lower to Middle Lampang Chaiburi Phatthalung Triassic Satun La-ngu Khao Kuantang Devonian Thong Pha Pa Samed section A Phum Khao Kuantang Lower Thong Pha section B Calboniferous Phum Khao Kuantang Permian Ratburi section C 35 New records of ammonoids (Cephalopoda: Ammonoidea) from Peninsular Thailand 3

MATERIALS AND METHODS All described specimens have been catalogued by KT and JN and afterwards deposited in the A total of 19 specimens of ammonoid fossils reference collections of PRC and the KPNHM. were studied. The terminology used in describing morphology, mophometric measurements and indices GEOLOGICAL SETTING essentially follows Arkell et al. (1957), Teichert et al. (1964), Wright et al. (1996) and Furnish et al. The Paleozoic and Mesozoic rocks in southern (2009). The Thai words used on specimen labels Peninsular Thailand are distributed along a north- and in the text are Khao (=Mountain), Amphoe south axis of the peninsula (Fig. 1) in the Phuket (=District), Muang (=City) and Changwat (=Province). Mountain range and the Nakhon Si Thammarat The materials are available from two collections. Mountain range (Wongwanich et al., 1983; DMR, 7KH¿UVWFROOHFWLRQRQHVSHFLPHQLVVWRUHGDWWKH 2013). The Upper Devonian and Lower Carboniferous Palaeontological Research and Education Center, Ma- rocks in the lower part of the peninsula belong to hasarakham University (PRC-SHM), Mahasarakham the Thong Pha Phum Group (DMR, 2001; Agematsu province (northeastern Thailand). The deposited et al., 2006). This sediment is black tentaculite specimen was collected by the third author (PS) shale in a deep sea facies in the lower part, grading from southern Thailand during 1973–1974 as into sandstone, shale with limestone intercalations unidentified outcrop fossils. The second collection, in the middle part and sandstone with grey, red eighteen specimens, belongs to the Natural History shale in the upper part (DMR, 2013). The Permian Museum, Kampangwitaya School (KPNHM), Satun rocks in Peninsular Thailand belong to the Ratburi province (southwestern Thailand). All specimens *URXS ZKLFK LV VXEGLYLGHG LQWR ¿YH IRUPDWLRQV in this collection were collected by the fourth Permian Clastic, Thung Nang Ling Formation and author (TN) between 2011 and 2013. Phap Pha Formation of the Permian Strata, Phanom All these specimens were collected from three Wang and Um Luk Formation of the Late Permian localities in southern Peninsular Thailand (Fig. 1, Starta (DMR, 2001). The Chaiburi Formation is Table 2). Localities 1 to 3 are situated in the La-ngu the early to late Triassic stratigraphic unit located in district, Satun province, Khao Kuanthang (06o Peninsular Thailand (Ampornmaha, 1995; Sardsud 96´N, 99o76´E) section A, Silurian-Devonian- et al., 2017); occurring only in Phattalung province. Carboniferous strata and section B, Carboniferous This formation consists of three members, namely strata, Thong Pha Phum Group, Pa Samed Formation the Phukhaothong Dolomite, Chiak Limestone and and section C, Permian strata, Ratburi Group Phanomwang Limestone (Ampornmaha, 1995; (DMR, 2001; 2013; Agematsu et al., 2006). Locality 4 Sardsud, 2001; Meesook et al., 2002; DMR, 2013; lies in the Muang Phatthalung district, Phatthalung Sardsud et al., 2017). province, at Khao Ok-thalu (07o37´N, 100o5´E), Phukhaothong Dolomite Member, Chaiburi Formation, Lampang Group, Early to Middle Triassic Strata (Anisian) (Ampornmaha, 1995; Sardsud, 2001).

36

Phuket mar. biol. Cent. Res. Bull. 2

Figure 1. Localities considered in the present study in Peninsular Thailand: Phatthalung province (1 locality); 6DWXQSURYLQFH ORFDOLWLHV  PRGL¿HGIURP'05  37

New records of ammonoids (Cephalopoda: Ammonoidea) from Peninsular Thailand 3

RESULTS Khao Kuanthang section A, La-ngu district, Satun province, 06o96´N, 99o76´E, collector T. Nutadhira. Suborder Clymennina Hyatt, 1844 Superfamily Parawocklumeriaceae Description. Phragmocone fragment, spherocone; Schindewolf, 1937 involute; whorl depressed, overlapped, height 15.0 Family Parawocklumeriidae Schindewolf, 1937 mm, 62.5% of diameter; umbilicus small, diameter 2.5 mm, 10.4% of conch diameter; venter smooth ?Parawocklumeriidae gen. et sp. indet. and round; constrictions, from umbilical shoulder Fig. 2 FURVVWRYHQWHUVVKDSHZLGWK௅PP of conch diameter, constrictions distant, distance Material examined. 2 specimens; KPNHM-020 and 19.0 mm, 79.2% of conch diameter. 021, diameter 24.0 mm (KPNHM-020), Pa Samed Formation, Thong Pha Phum Group, Devonian,

Figure 2. ?Parawocklumeriidae gen. et sp. indet., KPNHM-020: a. lateral view; b. line drawing.

Order Goniatitida Hyatt, 1884 Description. Phragmocone fragment, involute; Superfamily Cyclolobaceae Zittel 1895 whorl height 10.0 to 33.0 mm, 33.3 to 45.4% of Family Cyclolobitidae Zittel, 1895 conch diameter; umbilicus moderate, 8.0 to 21.0 mm, 26.6 to 40.9% of conch diameter; ormentations, Cyclolobus sp. indet. ULEV SUHVHQW WKLQ IDOFRLG DSSUR[LPDWHG  ¿QH Fig. 3 ribs between adjacent constrictions, constrictions present, deep, S-shaped, 5 constrictions per whorl. Material examined. 11 specimens; KPNHM-008 to 015, 017 to 019, diameter 22.0 to 62.0 mm, Ratburi Group, Permian, Khao Kuanthang section C, La-ngu district, Satun province, 06o96´N, 99o76´E, collector T. Nutadhira. 38

Phuket mar. biol. Cent. Res. Bull. 2

Figure 3. Cyclolobus sp. indet. KPNHM-008, lateral view.

Superfamily Goniatitaceae de Haan, 1825 width 12.9 to 33.0 mm, 31.3 to 77.3% of conch Family Goniatitidae de Haan, 1825 diameter, overlapping 60% of whorl height; venter Subfamily Goniatitinae de Haan, 1825 smooth and round; umbilicus narrow, round, diameter 2.2 to 9.0 mm, 11.4 to 13.4% of conch diameter, Goniatites cf. eganensis Korn and Titus, 2011 deep; suture, goniatitic, external lobes present, 3 Fig. 4 (E1:A1:L1), narrow acute (V shape), ventrolateral saddle (A1) sub-globular, apex slightly bend to 2011. Goniatites eganensis.RUQDQG7LWXV¿JV umbilicus. ௅S௅ Remarks. Goniatites eganensis Korn and Titus, Material examined. 5 specimens; KPNHM-003 to 2011 was previously recorded only from Lower 007, diameter 18.0 to 67.0 mm, Pa Samed Formation, Carboniferous strata in USA, San Saba and Camp Thong Pha Phum Group, Carboniferous, Khao Canyon Member, Chainman Formation, middle Kuanthang section B, La-ngu district, Satun province, Early Carboniferous strata, Antler Foreland Basin, 06o 96´N, 99o 76´E, collector T. Nutadhira. Nevada and Utha States (Korn and Titus, 2011). 7KLV VWXG\ FRXOG UHSUHVHQW WKH ¿UVW UHFRUG IURP Description. Phragmocone fragment, serpenticone; Asia, if better preserved material allows a more whorl cross section oval, depressed, whorl height detailed comparison. 9.6 to 31.0 mm, 20.9 to 59.1% of conch diameter, 39

New records of ammonoids (Cephalopoda: Ammonoidea) from Peninsular Thailand 3

Figure 4. Goniatites cf. eganensis Korn and Titus, 2011 (a–b: KPNHM-005 and c–e: KPNHM-003): a. anterior view; b. lateral view; c. suture on venter (E=external lobe, A= adventitious lobe); d. suture on lateral (L=lateral lobe); e. suture.

Order Prolecanitida Miller and Furnish, 1954 Khao Ok-thalu, Muang Phatthalung district, Suborder Ceratitina Hyatt, 1884 Phatthalung province, 7º37´N, 100º5´E, collector P. Srisuk. Ceratitina gen. sp. indet. Fig. 5 Description. Phragmocone fragment, outer whorl preserved, whorl section oval, whorl height 10.2 Material examined. 1 specimen; PRC-SHM-KO-685, mm, width 8.8 mm, slightly compressed to venter; diameter 10.2 mm, Phukhaothong Dolomite Member, venter smooth and round; surface smooth; suture Chaiburi Formation, Lampang Group, Triassic, ceratitic. 40

Phuket mar. biol. Cent. Res. Bull. 2

Figure 5. Ceratitina gen. sp. indet. PRC-SHM-KO-685: a. lateral view; b. cross section.

DISCUSSION the Excellence Centre for Biodiversity of Peninsular Thailand, Department of Biology, and Princess Most of the specimens in the present study are Maha Chakri Sirindhorn Natural History Museum, not well preserved, except Goniatites cf. eganensis Faculty of Science, Prince of Songkla University Korn and Titus, 2011, probably due to weathering by for their assistance in the laboratory work. Our heavy precipitation in the tropical climate. However, warmest thanks are dedicated to Janek von Byern, all taxa represent new discoveries in Thailand and Core Facility Cell Imaging and Ultrastructure should be added to the previously recorded twenty- Research, University of Vienna and Alexander four ammonoid taxa from peninsular Thailand that Lukeneder (Naturhistorisches Museum Wien) for were listed by Tongtherm et al. (2016). The total their supervision. This work was also supported number of ammonoid taxa is currently 140 in by the Higher Education Research Promotion and Thailand (Tongtherm et al. (2016) and this study) National Research University Project of Thailand, and of these 38 (more than 27.1%) occur in Peninsular 2൶FH RI WKH +LJKHU (GXFDWLRQ &RPPLVVLRQ DQG Thailand. ASEA-UNINETS research grant.

ACKNOWLEDGEMENTS

The authors would like to thank the Palae- ontological Research and Education Center, Mahasarakham University, Thailand, for the loan RIVSHFLPHQVLQWKLVVWXG\:HDOVRWKDQNVWD൵RI 41

New records of ammonoids (Cephalopoda: Ammonoidea) from Peninsular Thailand 3

REFERENCES

Agematsu, S., K. Sashida, S. Salyapongse and A. Sardsud. 2006. Lower Devonian tentaculite bed in the Satun area, southern peninsular Thailand. J. Southeast Asian Earth Sci. 26: 605-611. Ampornmaha, A. 1995. Triassic carbonate rocks in the Phattalung area, Peninsular Thailand. J. Southeast Asian Earth Sci. 11(3):í Arkell, W.J., W.M. Furnish, B. Kummel, A.K. Miller, R.C. Moore, O.H. Schindewolf, P.C. Sylvester- Bradley and C.W. Wright. 1957. Treatise on invertebrate palaeontology, part L Mollusca 4 Cephalopoda Ammonoidea. University of Kansas Press and Geological Society of America, Kansas, USA, 490 pp. Brown, G.F., S. Buravas, J. Charaljavanaphet, N. Jalichandra, W.D. Johnston, V. Sresthaputra and G.C. Taylor. 1951. Geologic reconnaissance of the mineral deposits of Thailand. Geol. Surv. Bull. 984: í Chonglakmani, C. 1983. The marine Mesozoic stratigraphy of Thailand. In: P. Nutalaya (ed.). Proceedings of the workshop on stratigraphic correlation of Thailand and Malaysia, The Geological Society of Thailand and Geological Society of Malaysia, Bangkok, Thailand. pp. 105–126. Department of Mineral Resources (DMR). 2001. Geology of Thailand, for the royal ceremony of 60th birthday of His Majesty the King 5 December 1999. Department of Mineral Resources, Ministry of Industry, Bangkok, Thailand, 556 pp. Department of Mineral Resources (DMR). 2006. Checklist of Thai-fossil; commemorative names honour persons. Department of Mineral Resources, Ministry of Industry, Bangkok, Thailand, 99 pp. Department of Mineral Resources (DMR). 2013. Lexicon of stratigraphic names of Thailand. Department of Mineral Resources, Ministry of Industry, Bangkok, Thailand, 265 p. Fujikawa, M. and T. Ishibashi. 2000. Paleozoic ammonoid paleobiogeography in Southeast Asia. Geosci. J. 4(4): í Fujikawa, M. and T. Ishibashi. 2006. Early Permian ammonoids from the Loei area, northeastern Thailand. Bull. Akiyoshi-Dai Mus. Nat. Hist. 41:í Fujikawa, M., T. Ishibashi, and N. Nakornsri. 1999. Middle Carboniferous cephalopods from Loei area, northern Thailand. Geol. Soc. Malay. Bull. 43: 467–475. Fujikawa, M., K. Ueno, A. Sardsud, W. Saengrichan, Y. Kamata and K. Hisada. 2005. Early Permian ammonoids from Kaeng Krachan Group of the Phatthalung-Hat Yai area, southern peninsular Thailnd. J. Asian Earth Sci. 24:í Furnish, W., B.F. Glenister, J. Kullmann and Z. Zuren. 2009. Treatise on Invertebrate Paleontology part L Mollusca 4 Revised Volume 2: Carboniferous and Permian Ammonoidea (Goniatitida and Prolecanitida). The University of Kansas Press, Kansas, USA, 258 pp. Glenister, B.F., W.M. Furnish, Z. Zuren and M. Polanah. 1990. Ammonoid cephalopods from Lower Permian of Thailand. J. Paleont. 64(3):í Hirsch, F., A. Bartolini and J. Guex. 2008. New ammonite evidence for Late Upper Toarcian along the Tak-Mae Sot highway, Tak province, W. Thailand. In: M. Choowong and T. Thitimakorn (eds.). Proceedings of the international symposia on geoscience resources and environments of Asian terranes (GREAT 2008), 4th IGCP 516 and 5th APSEG, Department of Geology, Faculty ofScience, Chulalongkorn University, Bangkok, Thailand. p. 154. Ingavat-Helmcke, R. 1994. Paleozoic paleontological evidence of Thailand. In: P. Angsuwathana, T. Wongwanich, W. Tansathien, S. Wongsomsak and J. Tulyatid (eds.). Proceedings of the international symposium on stratigraphic correlation of Southeast Asia, Department of Mineral Resources,  %DQJNRN7KDLODQGSSí Ishibashi, T. and C. Chonglakmani. 1990. Uppermost Permian ammonoids from northern Thailand. J. Southeast Asian Earth Sci. 4(3):í Ishibashi, T., M. Fujikawa and N. Nakornsri. 1996. Permian ammonoids from the Loei area, Northeast Thailand. Mem. Fac. Sci. Kyushu Univ. Ser. D Earth & Planet Sci. 29(2):í 42

Phuket mar. biol. Cent. Res. Bull. 2

Ishibashi, T., M. Fujikawa and N. Nakornsri. 1997. Biostratigraphy of Carboniferous and Permian ammonoid in Thailand. In: P. Dheeradilok, C. Hinthong, P. Chaodumrong, P. Putthaphiban, W. Tansathien, C. Utha-aroon, N. Sattyarak, T. Nuchanong and S. Techawan (eds.). Proceedings of the international conference on stratigraphy and tectonic evolution of Southeast Asia and the South  3DFL¿F'HSDUWPHQWRI0LQHUDO5HVRXUFHV%DQJNRN7KDLODQGSS± Kobayashi, T. 1978. The Jurassic palaeogeography of Japan and Southeast Asia. Proc. Japan Acad. Ser. B 54: 583–588. Korn, D. and A.L. Titus. 2011. Goniatites Zone (middle Mississippian) ammonoids of the Antler Foreland Basin (Nevada, Utah). Bull. Geosci. 81(1):í Kozai, T., L. Perelis-Grossowicz, A. Bartolini, C. Yamee, J. Sandoval, F. Hirsch, K. Ishida, T. Charoentitirat, A. Meesook and J. Guex. 2011. New palaeontological investigation in the Jurassic of western Thailand. Gondwana Res. 19: í Kummel, B. 1960. Triassic ammonoids from Thailand. J. Paleontol. 34(4):í Meesook, A. and J.A. Grant-Mackie. 1994. Biostratigraphic correlation of marine Jurassic rocks within Thailand and Southeast Asia. In: P. Angsuwathana, T. Wongwanich, W. Tansathien, S. Wongsomsak and J. Tulyatid (eds.). Proceedings of the international symposium on stratigraphic correlation of  6RXWKHDVW$VLD'HSDUWPHQWRI0LQHUDO5HVRXUFHV%DQJNRN7KDLODQGSSí Meesook, A. and J.A. Grant-Mackie. 1997. Faunal associations, paleoecology and paleoenvironments of the Thai marine Jurassic: a preliminary study. In: P. Dheeradilok, C. Hinthong, P. Chaodumrong, P. Putthaphiban, W. Tansathien, C. Utha-aroon, N. Sattyarak, T. Nuchanong and S. Techawan (eds.). Proceedings of the international conference on stratigraphy and tectonic evolution of Southeast  $VLDDQGWKH6RXWK3DFL¿F'HSDUWPHQWRI0LQHUDO5HVRXUFHV%DQJNRN7KDLODQGS௅ Meesook, A., V. Suteethorn, P. Chaodumrong, N. Teerarungsikul, A. Sardsud and T. Wongproyoon. 2002. Mesozoic rocks of Thailand: a summary. In: N. Mantajit (ed.). Proceedings of the symposium on geology of Thailand, Department of Mineral Resources, Bangkok, Thailand. pp. 82–94. Pitakpaivan, K., R. Ingavat, and P. Pariwatvorn. 1969. Fossils of Thailand. Mem. Geol. Surv. Div. Miner. Resour. 3(2): 44–67. Reed, F.R.C. 1920. Carboniferous fossils from Siam. Geol. Mag. 57(669):௅ Sardsud, A. 2001. Preleminary report on geological survey for standardization of Chaiburi Formation, Changwat Phattalung. In: T. Wongwanich (ed.). Proceedings of the annual symposium of Geological Division, Department of Mineral Resources, Department of Mineral Resources, Bangkok, Thailand.  SS௅ Sardsud, A., S. Agematsu-Watanabe, T. Wongwanich, H. Igo, and K. Sashida. 2017. Triassic conodont biostratigraphy of the Chaiburi Formation in peninsular Thailand; the Early to Late Triassic carbonates succession evidence in Shan-Thai terrane. In: A. Sardsud, K. Khaowiset, D. Saesaengseerung, K. Tongtherm, M. Katthasema, T. Pengtha and I. Chanpheng (eds.). Program and abstract, the 16th Gondwana international conference and the 14th international conference on Gondwana to Asia, Deparment of Mineral Resources, Bangkok. pp. 148–150. Suvatti, C. 1938. Molluscs of Siam. Bureau of Fisheries, Department of Fisheries, Bangkok, Thailand. 91 pp. 6XYDWWL&)DXQDRI7KDLODQG6HFRQG(GLWLRQ$SSOLHG6FLHQWL¿F5HVHDUFK&RUSRUDWLRQRI7KDLODQG Department of Fisheries, Bangkok, Thailand. 1100 pp. Teichert, C., B. Kummel, W.C. Sweet, H.B. Stenzel, W.M. Furnish, B.F. Glenister, H.K. Erben, R.C. Moore  DQG'(1=HOOHU7UHDWLVHRQLQYHUWHEUDWHSDODHRQWRORJ\SDUW.0ROOXVFD&HSKDORSRGDí  *HQHUDO)HDWXUHVí(QGRFHUDWRLGHDí$FWLQRFHUDWRLGHDí1DXWLORLGHDí%DFWULWRLGHD*HRORJLFDO6RFLHW\ of America and University of Kansas Press, Kansas, USA. 519 pp. Tongtherm, K., J. Nabhitabhata, P. Srisuk, T. Nutadhira and D. Tonnayopas. 2016. New records of nautiloid and ammonoid cephalopod fossils in peninsular Thailand. Swiss J. Palaeontol. 135: ௅ Wongwanich, T., D. Wyatt, B. Stait and C. Burrett. 1983. The Ordovician system in southern Thailand and northern Malaysia. In: P. Nutalaya (ed.). Proceedings of the workshop on stratigraphic correlation of Thailand and Malaysia, The Geological Society of Thailand and Geological Society of Malaysia, Bangkok, Thailand. pp. 77–95. 43

New records of ammonoids (Cephalopoda: Ammonoidea) from Peninsular Thailand 3

Wongwanich, T., A.J. Boucot, C.H.C. Brunton, M.R. House and P.R. Racheboeuf. 2004. Namurian fossils (brachiopods, goniatites) from Satun province, southern Thailand. J. Paleontol. 78(6):í World Register of Marine Species (WoRMS). 2017. Hipponix antiquatus (Linnaeus, 1767). http://www. marinespecies.org. Accessed March 8, 2017. Wright, C.W., J. H. Calloman and M.K. Howarth. 1996. Treatise on Invertebrate Paleontology part L Mollusca 4 Revised Volume 4: Cretaceous Ammonoidea. The Geological Society of America and University of Kansas Press, Kansas, USA, 362 pp. Yamee, C., T. Charoentitirat and A. Meesook. 2008. Faunal aspects of marine Jurassic Rocks in the Ban Mae Kut Luang Area, Mae Sot District, Tak Province, Thailand. In: M. Choowong and T. Thitimakorn (eds.). Proceedings of the international symposia on geoscience resources and environments of Asian terranes (GREAT 2008), 4th IGCP 516,and 5th APSEG, Chulalongkorn University, Bangkok,  7KDLODQGSSí Zhou, Z. and M. Liengjarern. 1997. Permian ammonoid Perrinites fauna associated with fusulinid miscellina in Thailand. In: P. Dheeradilok, C. Hinthong, P. Chaodumrong, P. Putthaphiban, W. Tansathien, C. Utha-aroon, N. Sattyarak, T. Nuchanong and S. Techawan (eds.). Proceedings of the international  FRQIHUHQFHRQVWUDWLJUDSK\DQGWHFWRQLFHYROXWLRQRI6RXWKHDVW$VLDDQGWKH6RXWK3DFL¿F Department of Mineral Resources, Bangkok, Thailand. p. 128. Zhou, Z. and M. Liengjarern. 2004. Lower Permian Perrinitid ammonoid faunas from Thailand. J. Paleontol. 78(2):í

Manuscript received: 5 May 2017 Accepted: 19 March 2018