Mongolepidida

Mongolepidida Temporal range: Sandbian–Sheinwoodian PreꞒ Ꞓ O S D C P T J K Pg N
Scales of Mongolepis rozmanae (A–D), Teslepis jucunda (E–G), Sodolepis lucens (H–J) and Rongolepis cosmetica (K–M)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Order:	† Mongolepidida Karatajūtė-Talimaa, Novitskaya, Rozman & Sodov, 1990
Subgroups
See text

Mongolepidida is an order of primitive chondrichthyans (cartilaginous fishes) that lived during the Ordovician and Silurian periods of Asia and North America. ^{[1] [2] [3]} They are only known from scales, so their appearance is largely unknown. The oldest of these scales, belonging to Solinalepis levis , have been dated back to the Sandbian age of the Ordovician, making mongolepidids some of the oldest chondrichthyans known to date. ^{[1] [4]}

Taxonomy

Based on Andreev et al. (2016) ^[1] and Andreev et al. (2020): ^[3]

• Family †MongolepididaeKaratajūtė-Talimaa et al., 1990
  • † Mongolepis Karatajūtė-Talimaa et al., 1990
  • † Rongolepis Sansom et al., 2000
  • † Sodolepis Karatajūtė-Talimaa & Novitskaya, 1997
  • † Taklamakanolepis Andreev et al., 2020
  • † Teslepis Karatajūtė-Talimaa & Novitskaya, 1992
• Family †ShiqianolepidaeSansom et al., 2000
  • † Chenolepis Sansom et al., 2000
  • † Shiqianolepis Sansom et al., 2000
  • † Tielikewatielepis Andreev et al., 2020
  • † Xiaohaizilepis Andreev et al., 2020
  • † Xinjiangichthys Wang et al., 1998
• Family incertae sedis
  • † Solinalepis Andreev et al., 2016

References

1. Andreev, P. S.; Coates, M. I.; Karatajūtė-Talimaa, V.; Shelton, R. M.; Cooper, P. R.; Wang, N.; Sansom, I. J. (2016). "The systematics of the Mongolepidida (Chondrichthyes) and the Ordovician origins of the clade". PeerJ. 4: e1850. doi: 10.7717/peerj.1850 . PMC   4918221 . PMID   27350896.
2. Karatajūtė-Talimaa, V. (1995). "The Mongolepidida: Scale structure and systematic position" . Geobios. Premiers Vertandébrandés et Vertandébrandés Infandérieurs. 28: 35–37. Bibcode:1995Geobi..28...35K. doi:10.1016/S0016-6995(95)80083-2 . Retrieved 14 August 2020.
3. Andreev, P. S.; Zhao, W.; Wang, N.; Smith, M. M.; Li, Q.; Cui, X.; Zhu, M.; Sansom, I. J. (2020). "Early Silurian chondrichthyans from the Tarim Basin (Xinjiang, China)". PLOS ONE. 15 (2): e0228589. doi: 10.1371/journal.pone.0228589 .
4. "The Paleobiology Database". paleobiodb.org. Retrieved 5 May 2016.