Collignoniceratidae

Collignoniceratidae Temporal range: Upper Cretaceous
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Ammonoidea
Order:	Ammonitida
Superfamily:	Acanthocerataceae
Family:	Collignoniceratidae Wright and Wright 1951
Subfamilies
see text

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:

• Collignoniceratinae Wright and Wright 1951
• Barroisiceratinae Basse 1947
• Peroniceratinae Hyatt 1900
• Texanitinae Collignon 1948

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

References

• Arkell et al, 1957, Mesozoic Ammonoidea, Treatise on Invertebrate Paleontology Part L. Geological Soc. of America, Univ of Kansas Press. R.C. Moore, (Ed)
• W. A. Cobban and Hook, S. C. 1983 Mid-Cretaceous (Turonian) ammonite fauna from Fence Lake area of west-central New Mexico. Memoir 41, New Mexico Bureau of Mines & Mineral Resources, Socorro NM.
• W. A. Cobban and Hook, S. C. 1979, Collignoniceras woollgari wooollgari (Mantell) ammonite fauna from Upper Cretaceous of Western Interior, United States. Memoir 37, New Mexico Bureau of Mines & Mineral Resources, Socorro NM.