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About: Haploceratidae     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : dbo:Mollusca, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: mollusca New Facet based on Instances of this Class

The Haploceratidae is the type family of the Haploceratoidea, a superfamily in the ammonitina; which according to Donovan et al. (1981) can be derived from the Taramelliceratinae, a subfamily of the Oppeliidae. Haploceratids, (Haploceratidae) are typically small, smooth and somewhat featureless ammonites, as described by Arkell et al, without ribbing or ventral keels and moderately undifferentiated sutures; that range from the Late Kimmeridgian to the Hauterivian, crossing from the Jurassic into the Cretaceous.