Subgroup, Kitakyushu City, Fukuoka Prefecture, Japan
Total Page:16
File Type:pdf, Size:1020Kb
Bull. Kitakyushu Mus. Nat. Hist. Hum. Hist., Ser. A, 1: 1-8, March 31, 2003 Misellina (Permian Fusulinoidea) from the limestone conglomerate in the Dobaru Formation of the Lower Cretaceous Wakino Subgroup, Kitakyushu City, Fukuoka Prefecture, Japan Yasuhiro Ota Kitakyushu Museum ofNatural History andHuman History, 2-4-1 Higashida, Yahata-higashi-ku, Kitakyushu 805-0071, Japan ABSTRACT— Fusulinoidean specimens referable to the genus Misellina have been found in the con glomerate within the Dobaru Formation of the Lower Cretaceous Wakino Subgroup, Kitakyushu City, Fukuoka Prefecture,Japan. These species suggest that the limestone of this area had a close relation ship to the limestone of Southeastern Asiaand the Akiyoshi Limestone Group, Yamaguchi Prefecture, and that it could be considered as a limestone of the late Early Permian time of the Tethyan region. This paper describes the Misellina specimens from the Dobaru Formation. aliciae, also described by Deprat (1912) but in Yun-nan, INTRODUCTION China The Paleozoic Yobuno Group (M. Ota el at, 1992; The present species were similarly discovered in a Nakae, 1998) is widely distributed in Kitakyushu City, and limestone cobble within the Dobaru Formation of the has a distribution in the western margin of the Akiyoshi Wakino Subgroup, at Hazegatoge, Kokuraminami Ward, Terrane, which is one ofJapanese PreJurassic terranes. Kitakyushu City (Fig. 1). They are referred to the genus Comparisons between fauna from this group and similar Misellina Schenck and Thompson, 1940. This paper faunas in other countries are very important for studies of deals with the systematic paleontology of these species. the continuity between Japanese terranes and neighbor ing ones, and discussing "paleo-Japan" in Carboniferous MISELLINA SPECIES FROM THE DOBARU and Permian times, and for clarifying the origin of the FORMATION AND ITS SIGNIFICANCE Japanese Islands. However, very little has been reported about fossils of the Yobuno Group because their fossils Over 60 species have been described under the are very rare and poorly preserved, owing to thermal genus Misellina since Schenck and Thompson established metamorphism in Late Cretaceous. Recently, Y. Ota the genus in 1940. Many species have been reported (2000, 2001, 2002) reported well-preserved fusulinoi- from several areas in the Tethyan region, and there have deans from conglomerates in the Lower Cretaceous been various discussions, for example about whether it is Dobaru Formation of the Wakino Subgroup, Kitakyushu the species of Misellina or not, Ozawa (1925a, b), Lee City. These fusulinoideans were derived from the under (1933), Kanmera (1957), Rauser (1963), Leven (1963, ling Paleozoic Yobuno Group and are very important 1982), Ozawa (1970), Choi (1972), Toriyama (1975), fossils for the reconstruction of paleo-Kitakyushu in Car Kobayashi (1977, 1997), Wang and Mu (1981), Sheng boniferous and Permian times. and Wang (1981), Yang (1985), Ueno (1991), Zhou and In this study of the Dobaru Formation, two types of Xie (1997) and so on. Misellina are discriminated in the specimens. One type Since Yabe presented his paper regarding the has a somewhat large shell, and seems to be referable to fusulinoideans of Mqji Ward in 1920, some other reports Misellina claudiae, which was originally described by have been of fusulinoidean species in Kitakyushu Deprat (1912) in Tou-Tchou-Chann, China and is a lead City. They have been reported by Fujimoto (1935), ing fossil of the late Early Permian age in the Akiyoshi Fujimoto et al (1961), Sotsuka (1975), and, M. Ota and Limestone Group. The other type of Misellina has a Yabumoto (1998). Among them, only one species of rather small shell for this genus, and resembles Misellina the genus Misellina, Misellina cf. ovalis (Deprat), was Received 17January 2003 Yasnhiro Ota Fig. I. Sampling point location: IT/001. (The base map is from the Geographical Survey Institute ofJapan, 1: 25, 000 Topographic Mapof Tokuriki. described by Sotsuka (1975) from the conglomerate Akiyoshi Limestone Group, where it is a leading within the Wakino Subgroup. However, the specimens fossil. The occurrence of this species suggests that the are not so well preserved. provenance of this limestone conglomerate- has a close The Dobaru Formation (M. Ota and YABUMOTO, relationship with the Akiyoshi and the Tethyan 1998), one of the formations of the Lower Cretaceous limestones. TORIYAMA (1975) reported Misellina cf. Wakino Subgroup, is interbedded with limestone con termieri from Khao Phlong Phrab, Thailand, and this glomerates derived from the underlying Paleozoic specimen is closely similar lo the present specimens in Yobuno Croup. The limestone conglomerates yield the that it has a somewhat large proloculus. Misellina termieri well-preserved Carboniferous- Permian fusulinoideans. was originally described by DEPRAT (1915) as "Doliolina" The species described herein were discovered from a termieri based on the specimens from Cam-mon in Laos. limestone cobble within the Dobaru Formation of the The other type, Misellina sp. A resembles M. aliciae Wakino Subgroup. The present species have a rather described by DEPRAT (1912) from Yun-nan, China; also small shell, but somewhat large proloculus. The inner reported by Lin el al. (1977) from Guangxi Zhuang one to two volutions seem to be uinbilicate. The septa Autonomous Region, China. Both specimens have a are unfluted and the parachomata are well developed. lot of similarities with Misellina sp. A. but differ in the From these general features, they can be referred to the expansion rate of the final volution. However more genus Misellina Schenck and THOMPSON, 1940. The specimens are necessary for determination of a final spe specimens from the Dobaru Formation are fairly well cific name. preserved and lliev seem to be the two distinguishable From the above Misellina species and the fusulinoi species of Misellina. The most important differences dean species found earlier in Kitakyushu City, the prov between the two types can be seen in their shell sizes and enance of the limestone within the Dobaru Formation of in the coiling of the volutions. One type is characterized the Wakino Subgroup seems to be the Tethyan region, by its larger and constantly coiled shell, rather than the especially the Southeastern Asian environs. The interca other shell type. lated limestone cobble with Misellina species is inferred to The former type can be assigned to Misellina claudiae, have originated from the Misellina claudiae Zone in the first described by DEPRAT (1912) from Tou-Tchou- Akiyoshi Limestone Group (M. Ota, 1977, OZAWA and Chann, China. Misellina claudiae (DEPRAT) lias been KOBAYASHI, 1990, Ukno, 1989, 1991, 1996) or correlative mainly reported from the Tethyan region and the strata of late Early Permian age (Table 1). Table 1. Tentative correlation of Misellina claudiae Zone among the fusulinoidean zonations in the reference sections. Ota and Ota, Ozawa and Ueno, Japan Ota, 1977 Ota, 1997 Zaw, 1999 Russia USA China 1993 Kobayashi,1990 1989,1991,1996 Lepldollna L. multlseptata L. multlaeptata yabeina globosa Boaraxoceras, multlaeptata BblraivenslB Anderssonoceras ehlralwenals (L. kumaensls) Y. globosa, L. multlseptata Yabeina igoi Yabeina arcbalca Afg. robbinaae. Colania douvlllel C. douvlllel C. douvlllel S. margarltae Atg. scbencki Verbeeklna verbeekl H. haydenl V. verbeekl (S. baydeni) N. fuaiformis Atg. Bchencki- V. verbeekl- V. verbeekl Afg. acbenckl Neoschwagerlna N. cratlcullfera H. cratlcullfera N. cratlcullfera Afg. tereabkovae cratlcullfera («. depratl) Afghanella achencki Atg. ozawai Pseudodollolina Presumatrlna ozawai achellwlenl S. simplex Pros. neoBcbwagerinoldes H. (CancelUna) fir. simplex) nlpponlca Parafuaullna Paxat. kaerimizenals Paraf. ParafoBullna Cancelllna cutaensis kaerimlzonalo kaerimizenals granuo-aveoae Paxat. grupperaenslB Armenia, M. ovalls Misellina claudiae M. claudiae (H.) claudiae M. parvlcoatata H. af3_ Ias H. parvlcoatata H. (B.) dybreafurtbl otal Pt. fuslformla - pamlrlna Brevaxlna dybrenfurtbl M. dybrenfortbi (Levenia) levenl Hi" Paeudotuaullna Pf. aff. amblgua Pf. krafftl Pf. ex. gr. krafftl Cbalaroacbvagerlna amblgua vulgar1b- Pamirlna darvaaica c Cbalaroscb. solita O Pamlrlna pulcbra -5 Paeudofusulina Pi. vulgarla Pf. vulgar1b Dutkevltcbia Pf.ex.gr. RobuBtoacbvagerlna vulgaris globosa splendid vulgaris acbellwieni- !4«- ParaBcbwagerlna mlra Pseudoschwagerlna P. muongthenole P. muongtbenala P. n. ap. AlpinoBchwagerina Sphaeroscb. glomerosa (P.) muoagtbenale P. mibaranoenala fUBlformiB P. auongthenels Paraacb. robustra- Parascb. Balbulakensla "Spbaeroacbwagerlna" Spbaeroscb.vulgaris - fuBiformia Sphaeroscb.fusiformis Yasuhiro Ota Univ. Tokyo, 45, Art. 4, pi. 2, figs. 1, 2. SYSTEMATIC PALEONTOLOGY 1925. Verbeekina claudiae, Ozawa. Jour. Coll. Sci., Imp. Superfamily Fusulinoidea von Moller, 1878 Univ. Tokyo, 45, Art. 6, p. 52, 53, pi. 11, figs, 9-11. Family Verbeekinidae, Staff and Wedekind, 1910 1933. Doliolina claudiae, Lee. Mem., Nat. Research Inst. Subfamily Misellininae, M.-Maclay, 1958 Geology, (14), pi. 2, figs. 5, 5a. Genus Misellina Schenck and Thompson, 1940 1934. Doliolina claudiae, Chen. Palaeontofogia Sinica, Ser. B, 4, Fasc. 2, p. 99, 100, pi.16, figs. 13-20. Type species: Doliolina ovalis Deprat, 1915. Mem. Sew. 1936. Doliolina claudiae, Huzimoto. Sci. Repts. Tokyo Geol. de VIndochine, 4, fasc. 1, p.15, 16, pl.3, figs. 1-4 [The Bunrika Daigaku, Sec. C, (2), p. 104, 105, pi. 21, figs. 4 -9. specimen illustrated by Deprat (1915) as figure 1 on his 1956. Misellina