Collignoniceratidae
Encyclopedia
Collignoniceratidae is a family of Upper Cretaceous ammonites characterized by typically more or less evolute shells with compressed, oval, or square whorl sections; serrate or entire keels; and dense ribs with one to 5 tubercles.
This family, named by Wright and Wright (1951) is divided into four subfamilies which are:
They are included in the large ammonitid
superfamily Acanthocerataceae
which lasted until the end of the Cretaceous.
The Collignoniceratidae are derived from the Acanthoceratidae
, first appearing early in the Turonian
(early U Cret) and lasting until the mid Campanian
(late U Cret), a span of some 20 million years
This family, named by Wright and Wright (1951) is divided into four subfamilies which are:
- Collignoniceratinae Wright and Wright 1951
- Barroisiceratinae Basse 1947
- Peroniceratinae Hyatt 1900
- Texanitinae Collignon 1948
They are included in the large ammonitid
Ammonitida
The Ammonitida is an order of more highly evolved ammonoid cephalopods from the Jurassic and Cretaceous time periods, commonly with intricate ammonitic sutures....
superfamily Acanthocerataceae
Acanthocerataceae
Acanthocerataceae is a superfamily of extinct Upper Creataceous ammonoid cephalopods belonging to the order, Ammonitida, and comprising some 10 or so families.-Analysis:...
which lasted until the end of the Cretaceous.
The Collignoniceratidae are derived from the Acanthoceratidae
Acanthoceratidae
Acanthoceratidae is an extinct family of cephalopods belonging to the Ammonite subclass. The Type genus is Acanthoceras.-Referenceas:*http://paleodb.org/cgi-bin/bridge.pl?action=checkTaxonInfo&taxon_no=95294&is_real_user=1...
, first appearing early in the Turonian
Turonian
The Turonian is, in the ICS' geologic timescale, the second age in the Late Cretaceous epoch, or a stage in the Upper Cretaceous series. It spans the time between 93.5 ± 0.8 Ma and 89.3 ± 1 Ma...
(early U Cret) and lasting until the mid Campanian
Campanian
The Campanian is, in the ICS' geologic timescale, the fifth of six ages of the Late Cretaceous epoch . The Campanian spans the time from 83.5 ± 0.7 Ma to 70.6 ± 0.6 Ma ...
(late U Cret), a span of some 20 million years