-
Archiacoceratidae are
represented by only two or
three (Sweet, 1964). The s**** of
oncocerids are
primarily somewhat compressed cyrtoconic brevicones. More advanced...
- from the
middle Devonian of the
United States Lorieroceras was a
bizarre oncocerid nautiloid from the
Devonian that
possessed a
helically coiled s**** A...
- PMID 22649542. Manda, Štěpán; Turek, Vojtěch (2009). "Minute
Silurian oncocerid nautiloids with
unusual color patterns". Acta
Palaeontologica Polonica...
-
Trimeroceras is a
genus of
straight oncocerid (Nautilodea, Cephalopoda) from the
Silurian (Telychian to Ludlow) of Europe, China, and
North America. Originally...
-
Clathroceras is an
extinct genus of
straight oncocerid belonging to the
family Trimeroceratidae. It
comprises several species,
including Clathroceras...
-
Oncocerida early in the Devonian.
Rutoceratidae comprise a
family within the
oncocerid superfamily Tainocerataceae They are
generally characterized by cyrtoconic...
- Akt****cheilus is a
genus of
oncocerid nautiloids from the
Upper Devonian (M Famenian)
included in the Acleistoceratidae, a
family characterized by depressed...
-
Hercocyrtoceras is a
middle Silurian oncocerid found in Nova
Scotia and Quebec. S**** are depressed,
irregularly annulated cyrtocones with V-shaped hyponomic...
-
Lorieroceras lorieri is an
extinct oncocerid nautilitoidean cephalopod belonging to the
family Nothoceratidae.
Fossils are
found in
Lower Devonian marine...
- (Kummel 1964) The
Nautilida are
thought to be
derived from
either of the
oncocerid families,
Acleistoceratidae or
Brevicoceratidae (Kummel 1964; Teichert...
