-
ammonoids (orders Agoniatitida, Clymeniida, Goniatitida, and Prolecanitida).
Ceratitic –
lobes have
subdivided tips,
giving them a saw-toothed appearance. The...
- subglobular, in others,
trochoidal or uncoiled.
Sutures are
typically ceratitic, with
smooth saddles and
serrate or
digitized lobes. In a few the sutures...
- no
prominent sculpture,
moderately large umbilicus, and
goniatitic or
ceratitic sutures with a
trifid (three pronged)
ventral lobe and few
auxiliary lobes...
- from the
Lower Tri****ic with a
moderately narrow discoidal s**** and
ceratitic suture. The s**** of
Arctoceras is
generally involute with compressed...
-
goniatitid ammonoides have
goniatitic sutures. In some the
sutures are
ceratitic, in others, even ammonitic. Nor are
goniatitic sutures limited to the...
-
characterized in
general by
highly ornamented or
tuberculate s**** with
ceratitic sutures that may
become goniatitic or
ammonitic in some offshoots. (Arkell...
- Trachyceratidae, has more or less involute,
highly ornamented s**** and
ceratitic to
ammonitic sutures. Sepkoski, Jack (2002). "Sepkoski's
Online Genus...
- has a
basically evolutute,
discoidal s**** with an
arched venter and
ceratitic sutures. The
Treatise 1957
includes it in the M****oceratidae although...
- Trachyceratidae, has more or less involute,
highly ornamented s**** and
ceratitic to
ammonitic sutures.
Notes Sepkoski, Jack (2002). "Sepkoski's Online...
-
Austrotrachyceras belongs,
Trachyceratidae involute,
highly ornamented s**** and
ceratitic to
ammonitic sutures. Sepkoski, Jack (2002). "Sepkoski's
Online Genus...
