Hoploscaphites Spedeni

By davidcpowers

• November 9, 2018

Taxonomy

Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Ammonitida
Family: Scaphitidae
Genus: Hoploscaphites
Species: Hoploscaphites spedeni

Geological Time Scale

Eon: Phanerozoic
Era: Mesozoic
Period: Cretaceous
Epoch: Late

Stratigraphy

Pierre Formation

Provenance

Collector: David C Powers
Date Collected: 10/12/2018
Acquired by: Field Collection

Dimensions

Length: 7 cm
Width: 5 cm
Height: 10 cm

Location

Cedar Creek, 7 miles south of Glendive
Dawson County
Montana
United States

• ammonite
• glendive montana
• hoploscaphites spedeni
• late cretaceous
• mollusca
• pierre shale formation
• scaphites
• upper cretaceous

Comments

Originally the specimen was collected as a concretion from upper Pierre Shale Formation near the lowest level of the Fox Hills Formation. The collection location is Cedar Creek about seven miles south of Glendive, Montana. The Date collected was Oct. 12, 2018. Later, I removed most of the concretion/matrix with diamond blade and bits. Two of the hoploscaphites spedeni were badly crushed and fractured during fossilization and are missing half of shells. During prep, I miscalculated the depth of cutting blade, slightly damaging the middle scaphites.