-
Ammonoids are
extinct spiral s****ed
cephalopods comprising the
subclass Ammonoidea. They are more
closely related to
living coleoids (i.e., octopuses...
- cephalopods,
along with the
extinct ammonoids (ammonites) and
living coleoids (such as squid, octopus, and kin).
While ammonoids and
coleoids are monophyletic...
- Tri****ic epoch. The
biostratigraphy is
constrained by the
presence of the
ammonoids Tirolites and Bajarunia, and conodonts. The Tirolites/Columbites beds...
-
Xiaowa Formation,
forming a lagerstätte
known as the
Guanling biota.
Ammonoids and
conodonts found in the
formation constrain its age to the
early Carnian...
-
ammonite s**** from the
Upper Jur****ic of
central Russia:
Implications to
ammonoid palaeoecology". Palaeogeography, Palaeoclimatology, Palaeoecology. 537:...
-
coleoids and
ammonoids, that is, the
latter groups arose from
within the Bactritida.: 393 An
increase in the
diversity of the
coleoids and
ammonoids is observed...
- 2 million
years ago.
During this time, the
first ammonoids appeared,
descending from
bactritoid nautiloids.
Ammonoids during this time
period were
simple and differed...
- Goniatids,
informally goniatites, are
ammonoid cephalopods that form the
order Goniatitida,
derived from the more
primitive Agoniatitida during the Middle...
- began, 393.3 Ma.
During this time, the
first ammonoids appeared,
descending from
bactritoid nautiloids.
Ammonoids during this time
period were
simple and differed...
-
Hoffmanniinae is an
adrianitid ammonoid cephalopod subfamily established for the
Middle Permian genus Hoffmannia. Hoffmannia,
named by
Gemmellaro in 1887...
