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New Hominoid Mandible from the Early Late Miocene Irrawaddy Formation in Tebingan Area, Central Myanmar Masanaru Takai1*, Khin Nyo2, Reiko T
Anthropological Science Advance Publication New hominoid mandible from the early Late Miocene Irrawaddy Formation in Tebingan area, central Myanmar Masanaru Takai1*, Khin Nyo2, Reiko T. Kono3, Thaung Htike4, Nao Kusuhashi5, Zin Maung Maung Thein6 1Primate Research Institute, Kyoto University, 41 Kanrin, Inuyama, Aichi 484-8506, Japan 2Zaykabar Museum, No. 1, Mingaradon Garden City, Highway No. 3, Mingaradon Township, Yangon, Myanmar 3Keio University, 4-1-1 Hiyoshi, Kouhoku-Ku, Yokohama, Kanagawa 223-8521, Japan 4University of Yangon, Hlaing Campus, Block (12), Hlaing Township, Yangon, Myanmar 5Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan 6University of Mandalay, Mandalay, Myanmar Received 14 August 2020; accepted 13 December 2020 Abstract A new medium-sized hominoid mandibular fossil was discovered at an early Late Miocene site, Tebingan area, south of Magway city, central Myanmar. The specimen is a left adult mandibular corpus preserving strongly worn M2 and M3, fragmentary roots of P4 and M1, alveoli of canine and P3, and the lower half of the mandibular symphysis. In Southeast Asia, two Late Miocene medium-sized hominoids have been discovered so far: Lufengpithecus from the Yunnan Province, southern China, and Khoratpithecus from northern Thailand and central Myanmar. In particular, the mandibular specimen of Khoratpithecus was discovered from the neighboring village of Tebingan. However, the new mandible shows apparent differences from both genera in the shape of the outline of the mandibular symphyseal section. The new Tebingan mandible has a well-developed superior transverse torus, a deep intertoral sulcus (= genioglossal fossa), and a thin, shelf-like inferior transverse torus. In contrast, Lufengpithecus and Khoratpithecus each have very shallow intertoral sulcus and a thick, rounded inferior transverse torus. -
Deep-Sea Video Technology Tracks a Monoplacophoran to the End of Its Trail (Mollusca, Tryblidia)
Deep-sea video technology tracks a monoplacophoran to the end of its trail (Mollusca, Tryblidia) Sigwart, J. D., Wicksten, M. K., Jackson, M. G., & Herrera, S. (2018). Deep-sea video technology tracks a monoplacophoran to the end of its trail (Mollusca, Tryblidia). Marine Biodiversity, 1-8. https://doi.org/10.1007/s12526-018-0860-2 Published in: Marine Biodiversity Document Version: Publisher's PDF, also known as Version of record Queen's University Belfast - Research Portal: Link to publication record in Queen's University Belfast Research Portal Publisher rights Copyright 2018 the authors. This is an open access article published under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. General rights Copyright for the publications made accessible via the Queen's University Belfast Research Portal is retained by the author(s) and / or other copyright owners and it is a condition of accessing these publications that users recognise and abide by the legal requirements associated with these rights. Take down policy The Research Portal is Queen's institutional repository that provides access to Queen's research output. Every effort has been made to ensure that content in the Research Portal does not infringe any person's rights, or applicable UK laws. If you discover content in the Research Portal that you believe breaches copyright or violates any law, please contact [email protected]. Download date:06. Oct. 2021 Deep-sea video technology tracks a monoplacophoran to the end of its trail (Mollusca, Tryblidia) Sigwart, J. -
From the Lower Part of the Irrawaddy Formation, Myanmar
New discovery of a large-sized Tetraconodon (Artiodactyla, Title Suidae) from the lower part of the Irrawaddy Formation, Myanmar Chit-Sein; Thaung-Htike; Tsubamoto, Takehisa; Tin-Thein; Author(s) Rössner, Gertrud E. Citation Asian paleoprimatology (2006), 4: 186-196 Issue Date 2006 URL http://hdl.handle.net/2433/199763 Right Type Departmental Bulletin Paper Textversion publisher Kyoto University Asian Paleoprimatology, vol. 4:186-196 (2006) Kyoto University Primate Research Institute New discovery of a large-sized Tetraconodon (Artiodactyla, Suidae) from the lower part of the Irrawaddy Formation, Myanmar Chit-Seini,Thaung-Htike2, Takehisa Tsubamoto2'3, Tin-Thein4, and Gertrud E. Rossner5 'Departmentof Geology, HinthadaUniversity, Hinthada, Myanmar 2PrimateResearch Institute , KyotoUniversity, Inuyama, Aichi 484-8506, Japan 3Centerfor PaleobiologicalResearch , HayashibaraBiochemical Laboratories, Inc., Okayama700-0907, Japan 4Departmentof Geology , Universityof Yangon,Yangon, Myanmar 5Departmentof Earth andEnvironmental Sciences , Paleontology Section, and Geobio- Center,Ludwig-Maximilians-University Munich, 80333 Munich, Germany Abstract New fossil dentitionsof a large-sized Tetraconodon (Mammalia, Artiodactyla, Suidae)were discoveredfrom the lowerpart of the IrrawaddyFormation, Migyaungye Township,Magway Division, central Myanmar. These specimens are the largest among the Tetraconodonspecimens ever found in Myanmar.The molar dimensions of thesespecimens are similarwith those of Tetraconodonmagnus but are smallerin the dimensionsof last -
The Miocene of Western Asia; Fossil Mammals at the Crossroads of Faunal Provinces and Climate Regimes
© Majid Mirzaie Ataaabdi (synopsis and Papers III, IV, V, VI) © J. T. Eronen, M. Mirzaie Ataabadi, A. Micheels, A. Karme, R. L. Bernor & M. Fortelius (Paper II) © Reprinted with kind permission of Vertebrata PalAsiatica (Paper I) Cover photo: Late Miocene outcrops, Ivand district, northwestern Iran, September 2007 Author’s address: Majid Mirzaie Ataabadi Department of Geosciences and Geography P. O. Box 64 00014 University of Helsinki Finland [email protected] Supervised by: Professor Mikael Fortelius Department of Geosciences and Geography University of Helsinki Finland Reviewed by: Professor Sevket Sen Departement Histoire De La Terre Muséum National d’Histoire Naturelle, Paris France Professor Jordi Agustí Institute of Human Paleoecology and s. Evolution University Rovira Virgili, Tarragona Spain Opponent: Professor George D. Koufos Department of Geology Aristotle University of Thessaloniki Greece ISSN 1798-7911 ISBN 978-952-10-6307-7 (paperback) ISBN 978-952-10-6308-4 (PDF) http://ethesis.helsinki.fi Helsinki University Print Helsinki 2010 Patience brings what you desire, not haste Mowlana Rumi To my Family To the people of IRAN رزا طآدی، م.، ٢٠١٠. ون آی ری، داران ل در ذره ام ھی وری و رژم ھی آب و ھوا. ارات داه ھ. ھ. ۶٩ ور و ١٠ رو. ﭼﻜﻴﺪه آی ری راردان در ذره ره ھی دی دم (ارو، آ و آر) دارای ه زی ات از راه آن وچ و راش داران و ام ھی وری ورت ر ات. وود ان ه وژه، آر داران ل ون در ر آ ادک وده، ودھی زرگ و ز در ن آ ھده ود. در ان ژوھش ش ده ات ام وش ھی را و رر آر داران از ل رد ھ و ی ا د ن ان ودھی ھش د. -
Shell Microstructures in Early Mollusks
Vol. XLII(4): 2010 THE FESTIVUS Page 43 SHELL MICROSTRUCTURES IN EARLY MOLLUSKS MICHAEL J. VENDRASCO1*, SUSANNAH M. PORTER1, ARTEM V. KOUCHINSKY2, GUOXIANG LI3, and CHRISTINE Z. FERNANDEZ4 1Institute for Crustal Studies, University of California, Santa Barbara, CA, 93106, USA 2Department of Palaeozoology, Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm, Sweden 3LPS, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, P.R. China, 414601 Madris Ave., Norwalk, CA 90650, USA Abstract: Shell microstructures in some of the oldest known mollusk fossils (from the early to middle Cambrian Period; 542 to 510 million years ago) are diverse, strong, and in some cases unusual. We herein review our recent work focused on different aspects of shell microstructures in Cambrian mollusks, briefly summarizing some of the major conclusions from a few of our recent publications and adding some new analysis. Overall, the data suggest that: (1) mollusks rapidly evolved disparate shell microstructures; (2) early mollusks had a complex shell with a different type of shell microstructure in the outer layer than in the inner one; (3) the modern molluscan biomineralization system, with precise control over crystal shapes and arrangements in a mantle cavity bounded by periostracum, was already in place during the Cambrian; (4) shell microstructure data provide a suite of characters useful in phylogenetic analyses of mollusks and mollusk-like Problematica, allowing better determination -
RESEARCH NOTE Field Collection of Laevipilina Hyalina Mclean, 1979 from Southern California, the Most Accessible Living Monoplacophoran
RESEARCH NOTE Field collection of Laevipilina hyalina McLean, 1979 from southern California, the most accessible living monoplacophoran Nerida G. Wilson1, Danwei Huang1,2, Miriam C. Goldstein1, Harim Cha1, Gonzalo Giribet3 and Greg W. Rouse1 1Scripps Institution of Oceanography, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0202, USA; 2Department of Biological Sciences, National University of Singapore, 14 Science 4, Singapore 117543, Singapore; and 3Department of Organismic and Evolutionary Biology and Museum of Comparative Zoology, Harvard University, 26 Oxford Street, Cambridge, MA 02138, USA Downloaded from https://academic.oup.com/mollus/article/75/2/195/1205729 by guest on 01 October 2021 Monoplacophora remain one of the most understudied and only freshly broken-off pieces of substrate. However, even grabs enigmatic molluscan groups to date. Thought to exist only as a that retrieved only one or two nodules often yielded L. hyalina. fossil group, living specimens were recovered in 1952 from The nodules themselves were covered with a sparse invert- abyssal Pacific waters off Costa Rica (Lemche, 1957). This sen- ebrate community (Fig. 2A). We found an average of 1.4 speci- sational discovery (Yonge, 1957) energized the debate about mens of L. hyalina per successful grab (n ¼ 36) with a molluscan evolution. A suite of new monoplacophoran species maximum of nine individuals taken in a single grab (Fig. 3). was subsequently described, mostly from abyssal and hadal The highest number of individuals collected on a single nodule depths worldwide (Schwabe, 2008), including the Antarctic was three but, when present, there was generally only one (e.g. -
Gfbs 18 200 7 Taxonomie Initiative Access and Benefit
7 GfBS newsletter | 18 200 news GfBS news Taxonomie Initiative Access and Benefit Höhlenschnecken Museum in Berlin Natur & Kunst DNA Bank ceDAMar GfBS in Wien Ausblick GfBS Inhalt Seite 3 Taxonomie Liebe GfBS-Mitglieder, 5 Access and Benefit der 1988 angesichts der Erderwärmung gegründe- 7 Höhlenschnecken te UN-Klimarat legte den dritten und letzen Teil des 11 Museum in Berlin 20 Natur & Kunst Weltklimaberichtes vor. Nachdem es in den beiden 32 DNA Bank ersten Teilen 42 ceDAMar um die zu 44 GfBS in Wien erwartenden Titelfoto: S. Hengherr Ei von Macrobiotus sapiens Folgen des Herausgeber K l i m a w a n - Gesellschaft für Biologische Systematik e.V. Geschäftsführer PD Dr. Uwe Fritz dels geht, Staatliche Naturhistorische Sammlungen wird jetzt auf- Dresden, Museum für Tierkunde, A.-B.- gezeigt, dass Meyer-Bau, Königsbrücker Landstr.159, 01109 Dresden, Telefon 0351 - 8926 326, Klimaschutz www.gfbs-home.de Ralph O. Schill in El Quseir (Ägypten) machbar und | Foto: privat Junge Systematiker vorallem be- www.gfbs-home.de/ag-jusys.html zahlbar ist. Kuratoren www.gfbs-home.de/kuratoren.html Dennocheditorial stimmt es mich nachdenklich, wenn man bedenkt das der Klimawandel schon 1992 auf der Marketing für Taxonomen www.gfbs-home.de/marketing.html Konferenz von Rio de Janeiro ein großes Thema war Redaktion/Anzeigen und die Politik nun 15 Jahre gebraucht hat um dies Dr. Ralph O. Schill, Universität Stuttgart, zur Kenntnis zu nehmen. Auch in der Taxonomie wird Biologisches Institut, Zoologie, Pfaffenwald- ring 57, 70569 Stuttgart, Telefon 0711 - seit Jahren immer wieder auf die Schwierigkeiten der 585 69143, Telefax 0711 - 685 65096, [email protected] Ausbildung und den Arbeitsmöglichkeiten aufmerksam gemacht. -
Foraging Tactics in Mollusca: a Review of the Feeding Behavior of Their Most Obscure Classes (Aplacophora, Polyplacophora, Monoplacophora, Scaphopoda and Cephalopoda)
Oecologia Australis 17(3): 358-373, Setembro 2013 http://dx.doi.org/10.4257/oeco.2013.1703.04 FORAGING TACTICS IN MOLLUSCA: A REVIEW OF THE FEEDING BEHAVIOR OF THEIR MOST OBSCURE CLASSES (APLACOPHORA, POLYPLACOPHORA, MONOPLACOPHORA, SCAPHOPODA AND CEPHALOPODA) Vanessa Fontoura-da-Silva¹, ², *, Renato Junqueira de Souza Dantas¹ and Carlos Henrique Soares Caetano¹ ¹Universidade Federal do Estado do Rio de Janeiro, Instituto de Biociências, Departamento de Zoologia, Laboratório de Zoologia de Invertebrados Marinhos, Av. Pasteur, 458, 309, Urca, Rio de Janeiro, RJ, Brasil, 22290-240. ²Programa de Pós Graduação em Ciência Biológicas (Biodiversidade Neotropical), Universidade Federal do Estado do Rio de Janeiro E-mails: [email protected], [email protected], [email protected] ABSTRACT Mollusca is regarded as the second most diverse phylum of invertebrate animals. It presents a wide range of geographic distribution patterns, feeding habits and life standards. Despite the impressive fossil record, its evolutionary history is still uncertain. Ancestors adopted a simple way of acquiring food, being called deposit-feeders. Amongst its current representatives, Gastropoda and Bivalvia are two most diversely distributed and scientifically well-known classes. The other classes are restricted to the marine environment and show other limitations that hamper possible researches and make them less frequent. The upcoming article aims at examining the feeding habits of the most obscure classes of Mollusca (Aplacophora, Polyplacophora, Monoplacophora, Scaphoda and Cephalopoda), based on an extense literary research in books, journals of malacology and digital data bases. The review will also discuss the gaps concerning the study of these classes and the perspectives for future analysis. -
The Cleveland Museum of Natural History
The Cleveland Museum of Natural History December 2007 Number 56:152–157 NYANZACHOERUS SYRTICUS (ARTIODACTYLA, SUIDAE) FROM THE LATE MIOCENE OF LEMUDONG’O, KENYA LESLEA J. HLUSKO Department of Integrative Biology University of California, 3060 Valley Life Sciences Building Berkeley, California 94720-3140 [email protected] AND YOHANNES HAILE-SELASSIE The Cleveland Museum of Natural History 1 Wade Oval Drive Cleveland, Ohio 44106-1767 ABSTRACT Lemudong’o Locality 1 is a late Miocene mammalian-dominated fossil site in the Narok District of southern Kenya. Suidae specimens from this site are scarce and fragmentary, however the recovered specimens can be confidently assigned to Nyanzachoerus syrticus based on the size and morphology of the third molars and the relative size of the third and fourth premolars. This species designation indicates a late Miocene/early Pliocene biochronological age, which accords with 40Ar/39Ar determinations of ,6.11 Ma (Deino and Ambrose, 2007). These Lemudong’o specimens indicate that N. syrticus inhabited the southern part of what is now Kenya by 6 Ma, the earliest known appearance of the species south of Lothagam, Kenya. Introduction The last decade has witnessed a dramatic increase in the recovery of late Miocene and early Pliocene mammalian fossils Lemudong’o is a 6-million-year-old fossil site in the Narok from sites in eastern and central Africa such as Lothagam (Harris District of southern Kenya (Ambrose et al., 2003, 2007; Deino and Leakey, 2003) and Lukeino (Pickford and Senut, 2001) in and Ambrose, 2007). Primarily, mammalian fossils have been Kenya, Aramis and the West Margin of the Middle Awash recovered from the Lemudong’o Locality 1 (LEM 1) and nearby (WoldeGabriel et al., 1994; Haile-Selassie et al., 2004) in Ethiopia, contemporaneous localities, consisting of a large number of the Warwire and Nkondo Formations in the Albertine Rift of colobine primates and hyracoids. -
Record of a Late Miocene Suid, Tetraconodon Intermedius from the Baripada Beds (Mayurbhanj, Orissa): Age Implications
Journal of the Palaeontological Society of India ISSN 0522-9630 Volume 58(2), December 2013: 213-218 RECORD OF A LATE MIOCENE SUID, TETRACONODON INTERMEDIUS FROM THE BARIPADA BEDS (MAYURBHANJ, ORISSA): AGE IMPLICATIONS K. MILANKUMAR SHARMA* and RAJEEV PATNAIK* *DEPARTMENT OF GEOLOGY (C. A. S.), PANJAB UNIVERSITY, CHANDIGARH-160014 Corresponding e-mail: [email protected] ABSTRACT The highly fossiliferous marine deposits of the Baripada Beds have been assigned ages ranging from Eocene to Pleistocene primarily based on biostratigraphically long-ranging foraminfers, molluscs and selachians. We describe here a short ranging (Late Miocene) suid, Tetraconodon intermedius from these beds for the first time. A detailed comparison and biostratigraphic correlation of our finding with similar finds from the Nagri-Dhok Pathan transition of the Siwalik of Jammu and the Irrawaddy beds of Myanmar allows us to provide a smaller age window of ~10-8 Ma to these beds. Keywords: Tetraconodon, Late Miocene, Biostratigraphy, Baripada Beds INTRODUCTION The Baripada Beds, which are considered to be deposited as a consequence of marine transgression (Modak, 1952), are well known for their diverse fossil assemblages: selachians, spine of Rays and Skates, bony fishes, molluscs and foraminifers. However, the precise geological age of these fossiliferous marine deposits has remained contentious for a long period of time due to the presence of long-ranging taxa. The current paper describes an isolated tooth of Tetraconodon intermedius, which is known from the Nagri-Dhok Pathan transition in Jammu Siwalik (Pilgrim, 1926). The present specimen was collected from the bluish grey sandy shale bed overlying the limestone deposits of Itamundia (Fig. -
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A contribution to the evolutionary biology of Conohyus olujici n. sp. (Mammalia, Suidae, Tetraconodontinae) from the early Miocene of Lučane, Croatia Raymond L. BERNOR Shundong BI College of Medicine, Department of Anatomy, Laboratory of Evolutionary Biology, Howard University, 520 W St. N.W., Washington D.C. 20059 (USA) [email protected] [email protected] Jakov RADOVČIĆ Croatian Natural History Museum, Department of Geology and Paleontology, Demetrova 1, HR 10000 Zagreb (Croatia) [email protected] Bernor R. L., Bi S. & Radovčić J. 2004. — A contribution to the evolutionary biology of Conohyus olujici n. sp. (Mammalia, Suidae, Tetraconodontinae) from the early Miocene of Lučane, Croatia. Geodiversitas 26 (3) : 509-534. ABSTRACT We describe here the topotypic series of Conohyus olujici n. sp. from the Croatian locality of Lučane. This sample was originally collected by local lignite miners in the 1930’s, who conveyed the sample to the parish’s Franciscan monk Dr. Josip Olujić. The Lučane Conohyus sample includes seven lower jaws and jaw fragments; no upper cheek teeth have yet been recovered. Our use of bivariate statistics, log10 ratio diagrams and a cladistic analysis all reveal that C. olujici n. sp. is the most primitive member of the Conohyus clade. The analyses reveal that: of the sample considered, only two species are referable to Parachleuastochoerus, P. sp. and P. crusafonti; Parachleuastochoerus is the sister-taxon to Conohyus; Conohyus is a clade, KEY WORDS and C. olujici n. sp. is the sister-taxon of the C. steinheimensis-C. simorrensis Mammalia, and C. sindiensis clades. Conohyus olujici n. sp. would appear to have occurred Suidae, Tetraconodontinae, at a time when the genus enjoyed a relatively continuous geographic range Conohyus, that extended from southern Europe to South Asia. -
New Materials of Tetraconodon Malensis (Mammalia, Artiodactyla, Suidae) from the Middle Miocene of Central Myanmar
Universities Research Journal 2008, Vol. I, NO.2 New Materials of Tetraconodon malensis (Mammalia, Artiodactyla, Suidae) from the Middle Miocene ofCentral Myanmar l 2 Thaung Htike , Zin Maung Maung Thein and Hnin Hnin Htar Abstract In this study, we report the additional dental specimens of Tetraconodon malensis (Artiodactyla, Suidae) discovered near Nwegwe Village, Chaung-U Township, Sagaing Division, central Myanmar. The well preserved maxitlary and mandibular fragments of T. malensis, firstly recorded from the ,basal part of the Khabo Formation (Middle Miocene) provide new dental characteristics of this species: large P3 with salient buccal and linfual walls; longer and wider P3 relative to P4; extremely large p3 and P ; longer but not wider p3 relative to p4; minute M3 with indistinct talon; well developed buccal cingulum in upper molars. The additional dental characteristics of T. malensis elucidates the taxonomic status of this species among tetraconodont suids, suggesting that T. malensis may have originated in Myanmar and was derived from Conohyus sindiensis ofIndian Subcontinent during the Early Miocene. Key words: Middle Miocene, new materials, taxonomic status, Tetraconodon malensis Introduction The fossil suids ofMyanmar have been knOWI). since the earlier part of 19th Century (Clift, 1828). Most ofthe Myanmar suids were described or mentioned by Colbert (1938, 1943) and Pilgrim (1910a, 1926, 1927a). Among their descriptions, Tetraconodon minor Pilgrim 1910a is a well known species which has been collected from the earliest Late Miocene of Myanmar. Recently, new species of Tetraconodon, T. malensis, T. irramedius and T. irramagnus were described from the Miocene of Myanmar (Thaung-Htike et al. 2005, 2007). Tetraconodon has been suggested that it was originated in Myanmar by the first appearance of smallest and most primitive T.