Just described in 2010, this is Gymnoichthys inopinatus. At that
time it was regarded by the authors as a basal neopterygian.
Early this year, another group of researchers assigned it to
the Caturoidea. As such it is the first caturoid described from
China and the oldest by some 40 million years. A relative Caturus,
found in the Jurassic deposits of Solnhofen is the patronymic
taxon for which the superfamily was named. Other members are
found in the Jurassic of Europe and North America. Unlike most
Middle Triassic fish, Gymnoichthys was essentially scaleless,
affording easy examination of the bony structure within; indeed,
Gymoichthys means “naked fish”. Note the dorsal fin
preserved on this specimen, and compare it with the other one
I have on offer, the first I have seen with such a flaglike dorsal.
In many cases with extant fish the male has the more flamboyant
finnage. Until a gravid female is found which will end the mystery
I will hedge my bets and just refer to this one as Morphotype
2. The repaired matrix cracks detract little from such an impressive
specimen. See my other offerings for the type I am calling Gymnoichthys
Revista Italiana di Paleontologia e Stratigrafa, Vol 116 No 2, pp161-172 July
2010. Vertebrata PalAsiatica, (1), pp1-16, 2013.