Eophyllites

Eophyllites
Temporal range: Early Triassic (Scythian)
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Ammonitida
Family: Ussuritidae
Genus: Eophyllites
Spath, 1930

Eophyllites is a genus of ammonoid cephalopods from the Lower Triassic and a predecessor of genera like Monophyllites and Ussurites.

The shell of Eophyllites is evolute, discoidal; whorls compressed, deeply embracing; flanks gently convex, converging on a narrowly rounded venter. Sutures basically ceratitic; ventral lobe wide, divided by a high siphonal saddle; Lobesjagged, 1st lateral larger than the second; saddles monophyllic, smooth and rounded.

Related Paleophylites from the same age is ribbed on the outer flanks and lobes in the suture are more terminally digitate.

References

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