Cravenoceras

Cravenoceras miseri, from Gordon (1964).

Belongs within: Ammonoidea.

Cravenoceras is an Upper Mississipian (Lower Carboniferous) genus of ammonoid.

Characters (from Gordon 1964): Conch thick discoidal to globose, narrowly to widely umbilicate; ornamented by flat transverse striae, slightly raised along orad edge giving appearance of raised bands; lamellae in mature shelled bowed slightly orad across venter, flattened in middle or form a definite sinus across venter; internal varices present. Suture with eight pointed lobes, simple, bell-shaped, pointed; ventral lobe relatively narrow, divided generally to less than half its length by median saddle.

<==Cravenoceras
    |--C. fayettevillae Gordon 1964 P68
    |--C. friscoense P68
    |--C. hesperium Miller & Furnish 1940 P68
    |--C. incisum P68
    |--C. involutum Gordon 1964 P68
    |--C. inyoense Gordon 1964 P68
    |--C. lineolatum Gordon 1964 P68
    |--C. merriami P68
    |--C. miseri Gordon 1964 P68
    |--C. nevadense Miller & Furnish 1940 P68
    |--C. richardsonianum P68
    `--C. scotti Miller & Youngquist 1948 P68

*Type species of generic name indicated

REFERENCES

Gordon, M., Jr. 1964. Carboniferous cephalopods of Arkansas. Geological Survey Professional Paper 460.

[P68] Purnell, L. R. 1968. Catalog of the Type Specimens of Invertebrate Fossils. Part I: Paleozoic Cephalopoda. United States National Museum Bulletin 262: 1-198.