0
Styxosaurinae=Elasmosaurinae

Because it includes (and is defined by the inclusion of) the genus Elasmosaurus, "Styxosaurinae" is necessarily a junior synonym of Elasmosaurinae Cope, 1869.

…read more, vote or answer

taxonomy
1 answer
image of Christian Kammerer   Christian Kammerer • 1,740
• 15 Mar 2016 10:41am
waiting for moderation