Biltnerites

Biltnerites is a genus of ammonites (s.l.) from the lower Triassic included in the ceratitacean family Tirolitidae of the order Ceratitida, characterized by a flat, evolute shell with moderately compressed, rounded whorls. The spinose stage characteristic of the Tirolitidae is absent, but the outer whorl does have indistinct ribs that cross the venter.

Biltnerites
Temporal range: Lower Triassic
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ceratitida
Superfamily:
Ceratitaceae
Family:
Tirolitidae
Genus:
Biltnerites

Biltnerites has been found in Lower Triassic sediments is S.E. Europe

References
    • Treatise on Invertebrate Paleontology, Part L; Ch. Mesozoic Ammonoidea. Geological Soc of America and U Kansas Press, R.C Moore (ed)


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