Two monotypic genera are notable for their unusual morphology : Erpeton possesses a pair of short , fleshy appendages protruding from the front of the snout .
Bitia has uniquely enlarged palatine teeth .
Two monotypic genera are notable for their unusual morphology : Erpeton possesses a pair of short , fleshy appendages protruding from the front of the snout , and Bitia has uniquely enlarged palatine teeth .