- The
Eugeneodontida,
sometimes also
called Eugeneodontiformes, is an
extinct and
poorly known order of
cartilaginous fishes. They
possessed "tooth-whorls"...
-
further group the
orders Petalodontiformes, Iniopterygiformes, and
Eugeneodontida into the
taxon "Paraselachimorpha", and
treat it as a
sister group to...
-
environments throughout the Tri****ic. Last
survivors of the
mainly Palaeozoic Eugeneodontida are
known from the
Early Tri****ic.
Temnospondyl amphibians were among...
- The
largest prehistoric animals include both
vertebrate and
invertebrate species. Many of them are
described below,
along with
their typical range of size...
-
family of
bizarre holocephalids within the
poorly understood order Eugeneodontida.
Members of the
Helicoprionidae possessed a
unique "tooth-whorl" on...
- †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray
Shark Holocephali †
Eugeneodontida †Iniopterygiformes †Petalodontiformes †Symmoriiformes
Chimaera Bony...
- More specifically,
Helicoprion can be
characterized as a
member of
Eugeneodontida, an
order of shark-like
euchondrocephalans which lived from the Devonian...
- Phylum:
Chordata class:
Chondrichthyes Subclass:
Holocephali Order: †
Eugeneodontida Family: †Caseodontidae Genus: †Romerodus Zangerl, 1981
Species †R. orodontus...
- the holocephali, they were
heavily ****ually dimorphic. †
Eugeneodontida Eugeneodonts Eugeneodontida Zangerl, 1981 4
Members of the holocephali, they are characterized...
- Phylum:
Chordata class:
Chondrichthyes Subclass:
Holocephali Order: †
Eugeneodontida Family: †Edestidae Genus: †Helicampodus
Species †Helicampodus egloni...
