- 2002.
Connecting ring
structure and its
significance for
classification of the
orthoceratid cephalopods. Acta
Palaeontologica Polonica 47 (1): 157–168....
-
separation of the
pseudorthocerids as the Pseudorthocerida, and
elevating orthoceratid as the
Subclass Orthoceratoidea.
Shevyrev (2005)
suggested a division...
- Mapes, R. H. (May 2004). "Lower
Carboniferous (Chesterian)
Embryonic Orthoceratid Nautiloids".
Journal of Paleontology. 78 (3): 560–573. doi:10...
- gets its name,
although Temperoceras is a
geisonoceratid rather than an
orthoceratid So far
Pseudotemperoceras is
known only from the
western Verkhoyansk...
- the only
member of its
subclass Paracoleoidea & a
descendant of the
orthoceratids, and a
remarkable example of
convergent evolution with
coleoid cephalopods...
- Metaspyroceras,
named by
Foeste (1932), were
previously included in the
orthoceratid subfamily Leuroceratinae,
which is no
longer considered a
valid taxon...
- "Connecting ring
structure and its
significance for
classification of the
orthoceratid cephalopods". Acta
Palaeontologica Polonica. 47 (1): 157–168. Kroger...
- "Connecting ring
structure and its
significance for
classification of the
orthoceratid cephalopods" (PDF), Acta
Palaeontologica Polonica, 47: 157–168, retrieved...
- leonovae.
Tenuitheoceras Gen. et sp. nov
Valid Frey et al.
Early Devonian (Pragian) Morocco An
orthoceratid. The type
species is
Tenuitheoceras secretum....
