ichthyosaurian การใช้

It shows that some typical ichthyosaurian traits were probably already part of the original ichthyoptergyian " Bauplan ".
""'Palvennia " "'is an extinct genus of ophthalmosaurid ichthyosaurian known from the uppermost Jurassic of Central Spitsbergen, Norway.
A year earlier, Hulke had described some remains from the same horizon and locality that he thought were ichthyosaurian, naming them " Enthekiodon " ( no species given ).
The assumed position of the naris in hupehsuchians as explained above can be taken as evidence for possible ichthyosaurian affinities, as it is in the same general area as those of ichthyosaurs.
However, recent re-examination of the type material of " Rachitrema " reaffirms the ichthyosaurian classification of the genus, with most of the original remains referable to Ichthyosauria, and the rest being indeterminate beyond Reptilia.