-
Dissidocerida is an
order of
Early Ordovician to the
Early Silurian orthoceratoid cephalopods in
which the
siphuncle has a
continuous lining or a longitudinal...
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inner layer. Currently,
Orthoceratoidea comprises the
orders Riocerida,
Dissidocerida, Actinocerida, Pseudorthocerida,
Lituitida and Orthocerida. Orthocerida...
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Orthocerida (482.5 to 211.5 Ma)
Order †
Ascocerida (478 to 412 Ma)
Order †
Dissidocerida (479 to 457.5 Ma)
Order †
Bajkalocerida Subclass †
Bactritoidea (422 to 252...
-
known as the
Orthoceratoidea (Kroger 2008)
along with the Ascocerida,
Dissidocerida, Lituitida, and Orthocerida. The
Pseudorthocerida were
among the last...
- Bactritoidea.
Recently some
workers in the
field have come to
recognize Dissidocerida as a
distinct order,
along with Pseudorthocerida, both
previously included...
-
Discosorida †
Order Nautilida Order Orthocerida †
Order Lituitida †
Order Dissidocerida †
Order Bactritida †
Order Goniatitida †
Order Prolecanitida † Order...
- class:
Cephalopoda Subclass:
Orthoceratoidea Order:
Orthocerida or
Dissidocerida Family:
Troedssonellidae Kobayashi 1935
Genera Tajaroceras Buttsoceras...
-
Ordovician cephalopods. Some
workers have
split off the
Pseudorthocerida and
Dissidocerida as
separate orders, the
latter on the
grounds that it
arose from a different...
-
extinct cephalopod family with
characteristics of the
orthoceratoid Dissidocerida,
found in C****inianage,
Lower Ordovician,
limestone in
western Utah...
-
genus Cyclorangeroceras from
Great Britain and
included them in the
Dissidocerida.
Rangeroceras is
named for one of the characters, the
range ranger,...
