Английская Википедия:Hedenstroemia
Материал из Онлайн справочника
Шаблон:Short description Шаблон:Automatic taxobox
Hedenstroemia is an extinct genus of Early Triassic (Olenekian) cephalopods in the ammonoid order Ceratitida. They were nektonic carnivores.[1]
Species
Distribution
Fossils of species within this family have been found in the Early Triassic of Afghanistan, Canada, Oman, Pakistan, Russia and United States.[1]
References
- J. Perrin Smith U.S. Lower Triassic Ammonoid of North America pg. 77 Geological Survey Professional Paper