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'''''Silurolepis platydorsalis''''' is an extinct species of [[Silurian]]-aged ''maxillae''<ref>{{Cite journal|author1=You-an Zhu|author2=Jing Lu|author3=Min Zhu|year=2019|title=Reappraisal of the Silurian placoderm Silurolepis and insights into the dermal neck joint evolution|journal=Royal Society Open Science|volume=6|issue=9|url=https://royalsocietypublishing.org/doi/10.1098/rsos.191181</ref> [[placoderm]] that has been described from (mostly) articulated remains. Although it has been known for several years, it was finally described by Zhang, et al., in 2010.<ref name="Zhang">{{cite journal|last=Zhang|first=Guo-Rui |author2=Shi-Tao Wang |author3=Jun-Qing Wang |author4=Nian-Zhong Wang |author5=Min Zhu|title=A basal antiarch (placoderm fish) from the Silurian of Qujing, Yunnan, China|journal=[[Palaeoworld]]|year=2010|volume=19|pages=129–135 |doi=10.1016/j.palwor.2009.11.006 |issue=1–2}}</ref> The earliest described placoderm is the [[Yunnanolepiformes|yunnanolepid]] antiarch, ''[[Shimenolepis]]'', from [[Llandovery epoch|Llandovery]] [[Hunan]]. In contrast to ''S. platydorsalis'', ''Shimenolepis'' is known only from distinctively ornamented thoracic armor plates that bear anatomic features unique to yunnanolepids.<ref name="BurrowTurner">{{cite journal | title=A review of placoderm scales, and their significance in placoderm phylogeny |author1=Burrow, Carol |author2=Turner, Susan |lastauthoramp=yes | journal=Journal of Vertebrate Paleontology |date=September 1998 | volume=19 | issue=2 | pages=204–219 | doi=10.1080/02724634.1999.10011135}}</ref><ref name="WangJ">{{cite journal | url=http://article.geobiology.cn/lunwen/%E6%9C%9F%E5%88%8A%E8%AE%BA%E6%96%87/%E5%BF%97%E7%95%99%E7%B3%BB/014/%E6%B9%98%E8%A5%BF%E5%8C%97%E5%BF%97%E7%95%99%E7%BA%AA%E8%83%B4%E7%94%B2%E9%B1%BC%E5%8C%96%E7%9F%B3.pdf | title=The Antiarchi From Early Silurian Hunan | author=Wang Junqing | journal=Vertebrata PalAsiatica | year=1991 | volume=21 | issue=3 | pages=240–244 | url-status=dead | archiveurl=https://web.archive.org/web/20131212161921/http://article.geobiology.cn/lunwen/%E6%9C%9F%E5%88%8A%E8%AE%BA%E6%96%87/%E5%BF%97%E7%95%99%E7%B3%BB/014/%E6%B9%98%E8%A5%BF%E5%8C%97%E5%BF%97%E7%95%99%E7%BA%AA%E8%83%B4%E7%94%B2%E9%B1%BC%E5%8C%96%E7%9F%B3.pdf | archivedate=2013-12-12 }}</ref>
'''''Silurolepis platydorsalis''''' is an extinct species of [[Silurian]]-aged ''maxillae''<ref>{{Cite journal|author1=You-an Zhu|author2=Jing Lu|author3=Min Zhu|year=2019|title=Reappraisal of the Silurian placoderm Silurolepis and insights into the dermal neck joint evolution|journal=Royal Society Open Science|volume=6|issue=9|url=https://royalsocietypublishing.org/doi/10.1098/rsos.191181}}</ref> [[placoderm]] that has been described from (mostly) articulated remains. Although it has been known for several years, it was finally described by Zhang, et al., in 2010.<ref name="Zhang">{{cite journal|last=Zhang|first=Guo-Rui |author2=Shi-Tao Wang |author3=Jun-Qing Wang |author4=Nian-Zhong Wang |author5=Min Zhu|title=A basal antiarch (placoderm fish) from the Silurian of Qujing, Yunnan, China|journal=[[Palaeoworld]]|year=2010|volume=19|pages=129–135 |doi=10.1016/j.palwor.2009.11.006 |issue=1–2}}</ref> The earliest described placoderm is the [[Yunnanolepiformes|yunnanolepid]] antiarch, ''[[Shimenolepis]]'', from [[Llandovery epoch|Llandovery]] [[Hunan]]. In contrast to ''S. platydorsalis'', ''Shimenolepis'' is known only from distinctively ornamented thoracic armor plates that bear anatomic features unique to yunnanolepids.<ref name="BurrowTurner">{{cite journal | title=A review of placoderm scales, and their significance in placoderm phylogeny |author1=Burrow, Carol |author2=Turner, Susan |lastauthoramp=yes | journal=Journal of Vertebrate Paleontology |date=September 1998 | volume=19 | issue=2 | pages=204–219 | doi=10.1080/02724634.1999.10011135}}</ref><ref name="WangJ">{{cite journal | url=http://article.geobiology.cn/lunwen/%E6%9C%9F%E5%88%8A%E8%AE%BA%E6%96%87/%E5%BF%97%E7%95%99%E7%B3%BB/014/%E6%B9%98%E8%A5%BF%E5%8C%97%E5%BF%97%E7%95%99%E7%BA%AA%E8%83%B4%E7%94%B2%E9%B1%BC%E5%8C%96%E7%9F%B3.pdf | title=The Antiarchi From Early Silurian Hunan | author=Wang Junqing | journal=Vertebrata PalAsiatica | year=1991 | volume=21 | issue=3 | pages=240–244 | url-status=dead | archiveurl=https://web.archive.org/web/20131212161921/http://article.geobiology.cn/lunwen/%E6%9C%9F%E5%88%8A%E8%AE%BA%E6%96%87/%E5%BF%97%E7%95%99%E7%B3%BB/014/%E6%B9%98%E8%A5%BF%E5%8C%97%E5%BF%97%E7%95%99%E7%BA%AA%E8%83%B4%E7%94%B2%E9%B1%BC%E5%8C%96%E7%9F%B3.pdf | archivedate=2013-12-12 }}</ref>


''S. platydorsalis'' is known from thoracic armor: as the specific name suggests, the dorsal side is very flat.<ref name="Zhang" />
''S. platydorsalis'' is known from thoracic armor: as the specific name suggests, the dorsal side is very flat.<ref name="Zhang" />

Revision as of 02:54, 28 November 2019

Silurolepis
Temporal range: Ludlow
outdated reconstruction of Silurolepis as a antiarch placoderm
Scientific classification
Kingdom:
Phylum:
Subphylum:
Infraphylum:
Class:
Order:
Family:
Silurolepidae
Genus:
Silurolepis
Species:
S. platydorsalis
Binomial name
Silurolepis platydorsalis
Zhang, 2010

Silurolepis platydorsalis is an extinct species of Silurian-aged maxillae[1] placoderm that has been described from (mostly) articulated remains. Although it has been known for several years, it was finally described by Zhang, et al., in 2010.[2] The earliest described placoderm is the yunnanolepid antiarch, Shimenolepis, from Llandovery Hunan. In contrast to S. platydorsalis, Shimenolepis is known only from distinctively ornamented thoracic armor plates that bear anatomic features unique to yunnanolepids.[3][4]

S. platydorsalis is known from thoracic armor: as the specific name suggests, the dorsal side is very flat.[2]

References

  1. ^ You-an Zhu; Jing Lu; Min Zhu (2019). "Reappraisal of the Silurian placoderm Silurolepis and insights into the dermal neck joint evolution". Royal Society Open Science. 6 (9).
  2. ^ a b Zhang, Guo-Rui; Shi-Tao Wang; Jun-Qing Wang; Nian-Zhong Wang; Min Zhu (2010). "A basal antiarch (placoderm fish) from the Silurian of Qujing, Yunnan, China". Palaeoworld. 19 (1–2): 129–135. doi:10.1016/j.palwor.2009.11.006.
  3. ^ Burrow, Carol; Turner, Susan (September 1998). "A review of placoderm scales, and their significance in placoderm phylogeny". Journal of Vertebrate Paleontology. 19 (2): 204–219. doi:10.1080/02724634.1999.10011135. {{cite journal}}: Unknown parameter |lastauthoramp= ignored (|name-list-style= suggested) (help)
  4. ^ Wang Junqing (1991). "The Antiarchi From Early Silurian Hunan" (PDF). Vertebrata PalAsiatica. 21 (3): 240–244. Archived from the original (PDF) on 2013-12-12.