Extinct genus of fishes
Eosaurichthys Saurichthys extinct genus , or potentially subgenus , of marine saurichthyid ray-finned fish that lived during the late Permian epoch (Changhsingian age) to potentially the Early Triassic epoch (Olenekian ).[ 1] E. madagascariensis is a member of this genus, then it appears to have survived the Permian-Triassic extinction event .
Eosaurichthys is often treated as a subgenus of Saurichthys genus , with its type species referred to as Saurichthys (Eosaurichthys ) chaoi .[ 2]
Up to two species are known:[ 2] [ 3]
Saurichthyid remains tentatively referred to E. madagascariensis are known from Anisian -aged freshwater beds of the Yerrapalli Formation in India.[ 3]
Appearance
Eosaurichthys closely resembles its daughter genus, Saurichthys , in both form and morphology. Its body is fully covered by scales, while in Saurichthys the scale cover is reduced.[ 2] [ 6]
See also
References
^ a b Sepkoski, Jack (2002). "A compendium of fossil marine animal genera" . Bulletins of American Paleontology . 364 : 560. Archived from the original on 2011-07-23. Retrieved 2009-04-24 . ^ a b c Tintori, Andrea (2013). "A new species of Saurichthys (Actinopterygii) from the Middle Triassic (early Ladinian) of the northern Grigna Mountain (Lombardy, Italy)" . Rivista Italiana di Paleontologia e Stratigrafia . 119 (3): 287– 302. doi :10.13130/2039-4942/6041 ^ a b "PBDB Taxon" . paleobiodb.org . Retrieved 2025-01-20 .^ Maxwell, E.E.; Romano, C. & Wu, F.-X. (2021). "Regional disparity in the axial skeleton of Saurichthyidae and implications for axial regionalization in non‐teleostean actinopterygians" . Journal of Zoology . 315 : 29– 41. doi :10.1111/jzo.12878 ^ Silvio Renesto; Fabio Magnani; Rudolf Stockar (2021). "A new species of Saurichthys (Actinopterygii: Saurichtydae) from the Middle Triassic of Monte San Giorgio" . Rivista Italiana di Paleontologia e Stratigrafia . 127 (1): 49– 71. doi :10.13130/2039-4942/15143 ^ Romano C., Kogan I., Jenks J., Jerjen I., Brinkmann W. (2012). "Saurichthys and other fossil fishes from the late Smithian (Early Triassic) of Bear Lake County (Idaho, USA), with a discussion of saurichthyid palaeogeography and evolution" (PDF) . Bulletin of Geosciences . 87 : 543– 570. doi :10.3140/bull.geosci.1337 {{cite journal }}: CS1 maint: multiple names: authors list (link )
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