Strigoceratidae

The Strigoceratidae is a family in the ammonitid superfamily Haploceratoidea, restricted to the lower Middle Jurassic, Bajocian stage, possibly derived from the Hammitoceratidae. The family was established and named by Buckman in 1924.

Strigoceratidae
Temporal range:
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Superfamily: Haploceratoidea
Family: Strigoceratidae
Buckman, 1924
Genera

Description

The shells of the Strigoceratidae are compressed to oxyconic, with a narrow or minute umbilicus and simple or irregularly branched ribbing almost confined to the outer (ventral) half of the whorl sides. The sutures are moderately simple to complex, with a long umbilical lobe bearing a graded series of Auxiliaries.

References


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