-
Helicoprionidae (sometimes
referred to as Ag****izodontidae) is an
extinct family of
holocephalans within the
order Eugeneodontida.
Members of the Helicoprionidae...
- that have been
discovered are
commonly placed within the
families Helicoprionidae ("spiral saws"), and
Edestidae ("those
which devour"), the
former containing...
- the
genus Ag****izodus. However,
other authors prefer the
family name
Helicoprionidae,
which was
first utilized 70
years prior to Ag****izodontidae. Helicoprionids...
-
eugeneodont holocephalian from the Carboniferous. It
belongs to the
family Helicoprionidae,
which is
sometimes called Ag****izodontidae. Like
other members of...
-
fishes of the
order Eugeneodontida, and more
specifically the
family Helicoprionidae to
which Parahelicoprion belongs. The
genus name
refers to Helicoprion...
- jaws in the form of
elaborate tooth whorls. The
first members of the
helicoprionidae, a
family eugeneodonts that were
characterized by the
presence of one...
-
Chordata class:
Chondrichthyes Subclass:
Holocephali Order: †Eugeneodontida Family: †
Helicoprionidae Genus: †Sarcoprion Nielsen, 1952
Species S. edax...
- size of
around 2 m
based on its relatives. It was
first placed in the
Helicoprionidae family but the more
recent authors have put it in Edestidae. "†Helicampodus...
-
Chondrichthyes Subclass:
Holocephali Order: †Eugeneodontida Family: †
Helicoprionidae Genus: †Campyloprion Eastman, 1902
Species †C.
annectans †C. ivanovi...
-
Chondrichthyes Subclass:
Holocephali Order: †Eugeneodontida Family: †
Helicoprionidae Genus: †Sinohelicoprion Liu & Chang, 1963
Species S. changhsingensis...
