- cartilage. The very
first remains of
Ptychodus were
found in
England and
Germany in the
first half of the 18th century.
Ptychodus teeth have long been identified...
- †Serratolamna
Family †Ptychodontidae (extinct,
Cretaceous period)
Genus †
Ptychodus (16+ species)
Below is a
cladogram showing relationships within Lamniformes...
-
sharks such as Squalicorax, Cretoxyrhina, and the
giant s****fish-eating
Ptychodus mortoni (believed to be 10
metres (33 ft) long); and
advanced bony fish...
-
reservoir by an embankment. [citation needed] In 1926,
fossilized tooth of
Ptychodus latissimus paucisulcata was
found in
redeposited sediments of
Tunguz sand...
-
examination of the
dental enameloid of the
Cretaceous durophagous shark Ptychodus supports neoselachian classification".
Journal of Paleontology. 90 (4):...
-
unique dentition,
combining Squalicorax-like,
cutting anterior teeth with
Ptychodus-like,
crushing posterior teeth. Glickman, L.S. (1980).
Evolyutsiya melovykh...
-
dolichosaurian thoracic vertebra and
teeth of chondrichthyians:
hybodontiform Ptychodus and
lamniform Protolamna, Cretolamna,
Cretoxyrhina and Hispidaspis. These...
-
describe new
fossil material of
Ptychodus from the
Upper Cretaceous strata in Mexico,
providing evidence that
Ptychodus was a high-speed
mackerel shark...
- the
dorsal finned Bananogmius, and the
cartilaginous fishes Cretolamna,
Ptychodus,
Rhinobatos and
Squalicorax were also
found within the formation. Several...
-
number of
other genera of
shark including Cretoxyrhina, Squalicorax,
Ptychodus, Cretalamna, Scapanorhynchus, and
hybodont sharks. In
order to coexist...
