Hedenstroemia

Hedenstroemia Temporal range: Triassic (Olenekian),[1] 251.3–247.2Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ [2]
Fossil shell of Hedenstroemia tscherskii from Madagascar, on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Ammonoidea
Order:	Ceratitida
Family:	Hedenstroemiidae [2]
Genus:	Hedenstroemia Waagen 1895

Hedenstroemia is an extinct genus of cephalopods in the ammonoid order Ceratitida. They were nektonic carnivores.^[2]

Species

^[2]

• Hedenstroemia evoluta Spath 1934
• Hedenstroemia hedenstroemi Keyserling 1845
• Hedenstroemia tscherskii Popov 1939 (Synonym Hedenstroemia mojsisovicsi

Distribution

Fossils of species within this family have been found in the Triassic of Afghanistan, Canada, Oman, Pakistan, Russia and United States.^[2]

References

• J. Perrin Smith U.S. Lower Triassic Ammonoid of North America pg. 77 Geological Survey Professional Paper