-
Devonian some 390
million years ago (around
Eifelian stage).
Goniatites (
goniatitids)
survived the Late
Devonian extinction to
flourish during the Carboniferous...
-
dominant goniatitids.
Prolecanitid genera averaged 14.7
million years in duration, as
compared to 5.7
million years for
Upper Carboniferous goniatitids. Suture...
- and the
superfamily Tornoceratoidea.
Tornoceratids are
subdiscoidal goniatitids with
biconvex growth lines and
sutures that form 6 to 10 lobes, the ventral...
- Cyclolobidae:
Goniatitid Ammonoidea belonging to the
Cycloloboidea with
thickly discoidal to
subglobular s**** with a
small but open
umbilicus and ammonitic...
-
Armatites is an
Upper Devonian goniatitid included in the
tornoceratid family. The s****, or conch, is discoidal, with
flattened flanks, a
flattened venter...
-
Quasintoceras is a
genus of
goniatitid ammonites from the
Lower Carboniferous Visean included in the
Intoceratidae of the Pericyclaceae, now Pericycloidea...
-
Dombarigloria is a
genus belonging to the
goniatitid family Cravenoceratidae;
extinct ammonoids which are s****ed
cephalopods more
closely related to squid...
-
Gleboceras is a
globular goniatitid from the
upper Carboniferous of the Urals,
named by Ruzhentsev, 1950,
tentatively ****igned to the Thal****oceratidae...
-
Qiannanites is a
genus of
goniatitid ammonites from the
lower Carboniferous included in the Prodromitidae,
which is part of the
superfamily Karagandocerataceae...
-
Quasicravenoceras is a
genus of
ammonites in the
goniatitid family Cravenoceratidae from the
Carboniferous of
Russia and Kazakhstan,
included in the Neoglyphioceratoidea...
