ammonites
Calliostoma (Calliostoma) metalium Woodring 1957 (top snail)

Gastropoda - Trochoidea - Trochidae

Full reference: W. P. Woodring. 1957. Geology and Paleontology of Canal Zone and adjoining parts of Panama. United States Geological Survey Professional Paper 306(A)

Belongs to Calliostoma (Calliostoma) according to W. P. Woodring 1957

Sister taxa: Calliostoma (Calliostoma) aurora, Calliostoma (Calliostoma) calderense, Calliostoma (Calliostoma) caronianum, Calliostoma (Calliostoma) conulus, Calliostoma (Calliostoma) decipiens, Calliostoma (Calliostoma) kickxii, Calliostoma (Calliostoma) laticarinatum, Calliostoma (Calliostoma) pulcher, Calliostoma (Calliostoma) pulchrum

Type specimen: USNM 561430, a shell

Ecology: epifaunal carnivore

Average measurements (in mm): shell 19.5 x 24.0