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Stegolophodon

Stegolophodon is an extinct genus of stegodontid proboscideans. It lived during the Miocene epoch in Asia.[1][2][3][4][5] The earliest fossils are known from the Early Miocene, with one of the oldest fossils being from Japan, estimated to be 17.3 million years old. It is suggested to be the ancestor of Stegodon, and transitional fossils between the two genera known from the Late Miocene of Southeast Asia and Yunnan in South China. Like modern elephants, Stegolophodon developed proal jaw movement, where the lower jaw moves in a back-to-front motion, rather than the oblique chewing motion used by earlier proboscideans, with this development already present by 17.3 million years ago.[6] Members of the genus generally have tetralophodont molars, and retain tusks on the lower jaw. The upper tusks have an enamel band.[7]

Stegolophodon
Temporal range: Early–Late Miocene
Tooth of Stegolophodon latidens
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Proboscidea
Family: Stegodontidae
Genus: Stegolophodon
Schlesinger, 1917
Type species
Stegolophodon latidens
(Clift, 1828)
(originally Mastodon latidens)
Species
  • S. praelatidens Koenigswald, 1959
  • S. progressus Osborn, 1929
  • S. pseudolatidens Saegusa, 2008
  • S. stegodontoides Pilgrim, 1913
  • S. cautleyi (Lydekker, 1886)
S. cautleyi

References edit

  1. ^ Suga, Shoichi; Nakahara, Hiroshi (2012-12-06). Mechanisms and Phylogeny of Mineralization in Biological Systems: Biomineralization '90. Springer Science & Business Media. ISBN 9784431681328.
  2. ^ Youping Zhang, Yuzhu Long, Hongxiang Ji, Suyin Ding, Translated by Will Downs Bilby Research Center, Northern Arizona University March (November 1999) [1989]. "The Cenozoic Deposits of the Yunnnan Region" (PDF). Professional Papers on Stratigraphy and Paleontology No. 7, Geological Publishing House, Peking, China, Pp. 1-21.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  3. ^ Geer, Alexandra van der; Lyras, George; Vos, John de; Dermitzakis, Michael (2011-02-14). Evolution of Island Mammals: Adaptation and Extinction of Placental Mammals on Islands. John Wiley & Sons. ISBN 9781444391282.
  4. ^ "The first mariners | AURANET". www.ifrao.com. Retrieved 2016-06-11.
  5. ^ "Fossilworks: Stegolophodon". fossilworks.org. Retrieved 17 December 2021.
  6. ^ Saegusa, Haruo (March 2020). "Stegodontidae and Anancus: Keys to understanding dental evolution in Elephantidae". Quaternary Science Reviews. 231: 106176. Bibcode:2020QSRv..23106176S. doi:10.1016/j.quascirev.2020.106176. S2CID 214094348.
  7. ^ Iizumi, Katsunori; Ando, Hisao; Suzuki, Kunihiro; Koda, Yoshiki (2021-07-01). "Mandibular Morphology of Stegolophodon pseudolatidens (Proboscidea, Stegodontidae) from the Lower Miocene of Japan". Paleontological Research. 25 (3). doi:10.2517/2020PR025. ISSN 1342-8144. S2CID 235729217.


stegolophodon, extinct, genus, stegodontid, proboscideans, lived, during, miocene, epoch, asia, earliest, fossils, known, from, early, miocene, with, oldest, fossils, being, from, japan, estimated, million, years, suggested, ancestor, stegodon, transitional, f. Stegolophodon is an extinct genus of stegodontid proboscideans It lived during the Miocene epoch in Asia 1 2 3 4 5 The earliest fossils are known from the Early Miocene with one of the oldest fossils being from Japan estimated to be 17 3 million years old It is suggested to be the ancestor of Stegodon and transitional fossils between the two genera known from the Late Miocene of Southeast Asia and Yunnan in South China Like modern elephants Stegolophodon developed proal jaw movement where the lower jaw moves in a back to front motion rather than the oblique chewing motion used by earlier proboscideans with this development already present by 17 3 million years ago 6 Members of the genus generally have tetralophodont molars and retain tusks on the lower jaw The upper tusks have an enamel band 7 StegolophodonTemporal range Early Late Miocene PreꞒ Ꞓ O S D C P T J K Pg N Tooth of Stegolophodon latidens Scientific classification Domain Eukaryota Kingdom Animalia Phylum Chordata Class Mammalia Order Proboscidea Family Stegodontidae Genus StegolophodonSchlesinger 1917 Type species Stegolophodon latidens Clift 1828 originally Mastodon latidens Species S praelatidens Koenigswald 1959 S progressus Osborn 1929 S pseudolatidens Saegusa 2008 S stegodontoides Pilgrim 1913 S cautleyi Lydekker 1886 S cautleyiReferences edit Suga Shoichi Nakahara Hiroshi 2012 12 06 Mechanisms and Phylogeny of Mineralization in Biological Systems Biomineralization 90 Springer Science amp Business Media ISBN 9784431681328 Youping Zhang Yuzhu Long Hongxiang Ji Suyin Ding Translated by Will Downs Bilby Research Center Northern Arizona University March November 1999 1989 The Cenozoic Deposits of the Yunnnan Region PDF Professional Papers on Stratigraphy and Paleontology No 7 Geological Publishing House Peking China Pp 1 21 a href Template Cite journal html title Template Cite journal cite journal a CS1 maint multiple names authors list link Geer Alexandra van der Lyras George Vos John de Dermitzakis Michael 2011 02 14 Evolution of Island Mammals Adaptation and Extinction of Placental Mammals on Islands John Wiley amp Sons ISBN 9781444391282 The first mariners AURANET www ifrao com Retrieved 2016 06 11 Fossilworks Stegolophodon fossilworks org Retrieved 17 December 2021 Saegusa Haruo March 2020 Stegodontidae and Anancus Keys to understanding dental evolution in Elephantidae Quaternary Science Reviews 231 106176 Bibcode 2020QSRv 23106176S doi 10 1016 j quascirev 2020 106176 S2CID 214094348 Iizumi Katsunori Ando Hisao Suzuki Kunihiro Koda Yoshiki 2021 07 01 Mandibular Morphology of Stegolophodon pseudolatidens Proboscidea Stegodontidae from the Lower Miocene of Japan Paleontological Research 25 3 doi 10 2517 2020PR025 ISSN 1342 8144 S2CID 235729217 nbsp This article about a prehistoric proboscidean is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Stegolophodon amp oldid 1214322193, wikipedia, wiki, book, books, library,

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