- The
Ellesmeroceratidae constitute a
family within the
cephalopod order Ellesmerocerida. They
lived from the
Upper Cambrian to the
Lower Ordovician. They...
- that are
concave in outline. Accordingly, the
order includes the
Ellesmeroceratidae, Protocycloceratidae, Cyclostomiceratidae, B****leroceratidae, Eothinoceratidae...
- oversplit. Most of
these early forms died out, but a
single family, the
Ellesmeroceratidae,
survived to the
early Ordovician,
where it
ultimately gave rise to...
- by
Flower (1964) and Hook and
Flower (1977), but re****igned to the
Ellesmeroceratidae by Kröger et al. (2007)
Whether Rioceras is ****igned to the Baltoceratidae...
- Wan****au,
Upper Cambrian Trempealeauan of China, ****igned to the
Ellesmeroceratidae. The s**** of
Eburoceras is long and narrow,
curved in a
broad arc...
-
Cyptendoceras is an
extinct nautiloid cephalopod included in the
family Ellesmeroceratidae that
lived in what
would be
North and
South America during the latter...
-
Ellesmeroceras is the type
genus for the
Ellesmeroceratidae, a
family of
primitive nautiloid cephalopods, that is
characterized by its small, generally...
-
ventral surface. Its
inclusion in the
Baltoceratidae rather than in the
Ellesmeroceratidae is
based in
large part on the lack of
observable diaphragms in the...
-
Animalia Phylum:
Mollusca class:
Cephalopoda Subclass:
Nautiloidea Order:
Ellesmerocerida Family:
Ellesmeroceratidae Genus:
Quebecoceras Foeste, 1925...
-
Animalia Phylum:
Mollusca class:
Cephalopoda Subclass:
Nautiloidea Order: †Ellesmerocerida Family: †
Ellesmeroceratidae Genus: †Clarkoceras Ruedemann, 1905...
