Only the Sinostega palaeo-tetrapod community, which existed in the North China faunistic province, lacks this genus; however, there are some yet undescribed sarcopterygians
mentioned by Zhu et al.
(Northcutt, 1980), and teleosts (Alves-Gomes, 2001).
As for the collagen, according to Sire and Akimenko (2004), the structure of the elasmoid scale was described in many species of actinopterygians and sarcopterygians
222) Lophosteus the earliest osteichthyan which cannot be placed among either the actinopterygians or sarcopterygians
Overall, this outcrop is famous for an abundant association of vertebrate remains: psammosteids (Mark-Kurik 1968, 1995; Obruchev & Mark-Kurik 1965), placoderms (Karatajute-Talimaa 1963), sarcopterygians
(Vorobyeva 1977), chondrichthyans (Marss et al.
They are represented by undetermined placoderms, acanthodians and sarcopterygians
distinctum Valiukevicius; and the sarcopterygians
the heterosteid Tollichthys, and several sarcopterygians
acanthodians Devononchus tenuispinus Gross and Homacanthus sveteensis Gross (were not found in 2009 and 2010), sarcopterygians
The Middle Devonian fishes (placoderms, acanthodians, sarcopterygians
, actinopterygians) were identified to a generic or higher level.
All samples contained remains of various vertebrates, including psammosteid heterostracans, placoderms, numerous acanthodians, sarcopterygians
and actinopterygians (Marss et al.
Vertebrates described in earlier studies include psammosteids (Obruchev & Mark-Kurik 1965; Mark-Kurik 1968, 1995), placoderms (Karatajute-Talimaa 1963), acanthodians (Valiukevicius 1998), and sarcopterygians