-
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...
- some
derived forms, the
suture pattern becomes simplified,
appearing ceratitic or even goniatitic. The
Ammonitina are
derived from the Phylloceratina...
-
characterized in
general by
highly ornamented or
tuberculate s**** with
ceratitic sutures that may
become goniatitic or
ammonitic in some offshoots. (Arkell...
-
goniatitid ammonoides have
goniatitic sutures. In some the
sutures are
ceratitic, in others, even ammonitic. Nor are
goniatitic sutures limited to the...
-
Austrotrachyceras belongs,
Trachyceratidae involute,
highly ornamented s**** and
ceratitic to
ammonitic sutures. Sepkoski, Jack (2002). "Sepkoski's
Online Genus...
-
Daraelitidae acquire a few
finely serrated lobes (as
characteristic for
ceratitic sutures). The
first lateral saddle is
proportionally small,
though its...
-
venters and
commonly with
lateral ribs.
Sutures are
goniatitic to
weakly ceratitic. The Xenodiscidae,
which are part of the
superfamily Xenodiscoidea, are...
- Trachyceratidae, has more or less involute,
highly ornamented s**** and
ceratitic to
ammonitic sutures.
Notes Sepkoski, Jack (2002). "Sepkoski's Online...
- of the venter.
Ribbing between tubercles is indistinct. The
suture is
ceratitic. Arkell, et al. 1957.
Mesozoic Ammonoidea;
Treatise on
Invertebrate Paleontology...
