-
Orthocerida, from
Ancient Gr**** ὀρθός (orthós),
meaning "straight", and κέρας (kéras),
meaning "horn", also
known as the Michelinocerida, is an order...
- †Ellesmerocerida. †Endoceratoidea = †Endocerida †Orthoceratoidea = †
Orthocerida, †Ascocerida, and †Pseudorthocerida (the
Orthoceratoidea of Kröger 2007)...
- In geology, the
Arenig (or Arenigian) is a time
interval during the
Ordovician period and also the
suite of
rocks which were
deposited during this interval...
- & Co.,
Garden City, New York Sweet,
Walter C. (1964),
Nautiloidea --
Orthocerida, in
Treatise on
Invertebrate Paleontology. Part K.
Mollusca 3, Geological...
- Dissidocerida, Actinocerida, Pseudorthocerida,
Lituitida and
Orthocerida.
Orthocerida is a
noteworthy paraphyletic order which is
ancestral to the major...
-
organic deposits,
unlike orthoceratoid cephalopod orders such as the
Orthocerida and Actinocerida.
Endocerids reached enormous body sizes. The largest...
- (478.5 to 324 Ma)
Order Nautilida (extant; 410.5 Ma to present)
Order †
Orthocerida (482.5 to 211.5 Ma)
Order †
Ascocerida (478 to 412 Ma)
Order † Bactritida...
- the
earliest cephalopod group Ellesmerocerida Orthocones: Endocerida,
Orthocerida,
Actinocerida Brevicones: Ascocerida,
Oncocerida Earliest coiled cephalopods:...
- the
earliest cephalopod group Ellesmerocerida Orthocones: Endocerida,
Orthocerida,
Actinocerida Brevicones: Ascocerida,
Oncocerida Earliest coiled cephalopods:...
- is an
extinct genus from the
carnivorous nautiloid cephalopod order Orthocerida that
lived in what
would be
North America, Europe, and Asia
during the...
