-
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...
-
goniatitid ammonoides have
goniatitic sutures. In some the
sutures are
ceratitic, in others, even ammonitic. Nor are
goniatitic sutures limited to the...
- some
derived forms, the
suture pattern becomes simplified,
appearing ceratitic or even goniatitic. The
Ammonitina are
derived from the Phylloceratina...
- Trachyceratidae, has more or less involute,
highly ornamented s**** and
ceratitic to
ammonitic sutures.
Notes Sepkoski, Jack (2002). "Sepkoski's Online...
-
characterized in
general by
highly ornamented or
tuberculate s**** with
ceratitic sutures that may
become goniatitic or
ammonitic in some offshoots. (Arkell...
- no
prominent sculpture,
moderately large umbilicus, and
goniatitic or
ceratitic sutures with a
trifid (three pronged)
ventral lobe and few
auxiliary lobes...
-
Daraelitidae acquire a few
finely serrated lobes (as
characteristic for
ceratitic sutures). The
first lateral saddle is
proportionally small,
though its...
-
those previous. The
venter is
moderately to
sharply keeled, the
suture is
ceratitic, with
smooth saddles and
serrate lobes.
Inyoites is
described in W.J....
- spines, or
spiral ridges.
Umbilicus variable, body
chamber short.
Sutures ceratitic with
smooth rounded saddles and
serrated lobes.
Smith (1932) and Arkell...
