-
Perisphinctidae is a
family of
Middle and
Upper Jur****ic
discoidal ammonites in the
order Ammonitida. They have a s****
morphology that is
mostly evolute...
-
Perisphinctidae:
Middle and
Upper Jur****ic root stock,
derived from the
Stephanoceratidae (Middle Jur****ic
direct derivatives of the
Perisphinctidae)...
- class:
Cephalopoda Subclass: †Ammonoidea Order: †Ammonitida Family: †
Perisphinctidae Subfamily: †Perisphinctinae Genus: †Perisphinctes Waagen, 1869 Type...
-
Flabellisphinctes is
included in the
subfamily Grossouviinae which is part of the
Perisphinctidae. The s**** is
around 5 cm (abt. 2in) in diameter, with
close spaced...
-
Kranaosphinctes is an
extinct genus of
ammonites belonging to the
Perisphinctidae family. Some
authors consider Kranaosphinctes a
subgenus of the genus...
-
Berriasian of the Cretaceous. The
family is
thought to
derive from
Perisphinctidae. "Paleobiology
Database - Himalayitidae".
Retrieved 2017-10-19. Ammonites...
- class:
Cephalopoda Subclass: †Ammonoidea Order: †Ammonitida Family: †
Perisphinctidae Subfamily: †Perisphinctinae Genus: †Alligaticeras Buckman, 1923...
-
Animalia Phylum:
Mollusca class:
Cephalopoda Subclass:
Ammonoidea Family:
Perisphinctidae Subfamily:
Zigzagiceratinae Genus:
Zigzagiceras d'Orbigny, 1846 Species...
- Pachyceratidae,
according to
Donovan et al. (1981), were
derived from the
Perisphinctidae in the mid
Callovian at
about the same time as the
longer lived Aspidoceratidae...
- Ammonitida)
found in England, Germany, and Switzerland,
belonging to the
Perisphinctidae. The s**** is
strongly embracing,
tending to be
oxyconic (sharp rimmed)...
