- pair of
gastralia gets a
distinct name: the hyoplastra, hypoplastra,
xiphiplastra, and in some taxa the mesoplastra.
Gastralia were
ancestrally present...
- well as
paired epiplastra, entoplastra, hyoplastra,
hypoplastra and
xiphiplastra (Pritchard & Trebbau, 1984). The
oldest records of Pan-Chelidae (the...
-
hypoplastra (containing the
posterior bridge strut) and the rear is a pair of
xiphiplastra.
Overlying the
boney elements are a
series of scutes,
which are made...
-
radial process on the humerus, and a
peculiar bent
formation of the
xiphiplastra. He
concluded that
Protostega gigas was an
intermediate form between...
- none of the
nuchal emargination that is more
visible in juveniles. The
Xiphiplastras also have a large, V-shaped
notch near the back of the bone. The skull...
