- Ag****izodontidae.
Helicoprionids (or ag****izodontids) have large, cartilage-supported
whorls with
strongly arched shapes.
Helicoprionids do not shed their...
-
eugeneodont holocephalan from the
Permian of Greenland.
Similar to
other helicoprionids such as Ag****izodus and Helicoprion, it
possessed tooth whorls on the...
-
alternatively been
identified as
enameloid or
vitrodentine in
other helicoprionids,
rather than true enamel. The
interior of the
teeth remains in excellent...
- from
partial or
complete body fossils.
Unlike the
distantly related helicoprionids,
members of this
family crossed the Permian-Tri****ic
boundary and persisted...
- 14
December 2015. H. T. Liu; M. N.
Chang (1963). "First
discovery of
helicoprionid in China".
Vertebrata PalAsiatica (in Chinese). 7 (2): 123–129. v t...
-
coelacanths Changxingia and Youngichthys.
Within the Eugeneodontida, the
helicoprionids are
represented by the
genus Sinohelicoprion; as well as some edestids...
-
portion of the
symphyseal lower whorl has
vague similarities with
Permian helicoprionids,
although the
authors consider the
crown morphology too
different to...
-
Diabolepis and Youngolepis. Liu, H. & Chang, M.
First discovery of
helicoprionid in China.
Vertebrata PalAsiatica (1963). Chang, M New
materials of Mesoclupea...
- Novikov, I. V. (2023). "Tooth
whorl structure,
growth and
function in a
helicoprionid chondrichthyan Karpinskiprion (nom. nov.) (Eugeneodontiformes) with...
