Scaphites

About it

Late Cretaceous ammonite that coils tightly at first, then grows a short straight shaft ending in a hook. Common in Pierre Shale and Fox Hills concretions of South Dakota and Montana, often with pearly shell.

Type

Fossil (mollusc)

Group

Cephalopod (mollusc)

Colours

brown, tan, grey, iridescent

Transparency

opaque

Periods

Cretaceous

Typical values: real specimens vary. For more, see mindat.org.