PaleoDB taxon number: 132889
Full reference: O. Haas. 1943. Some abnormally coiled ammonites from the Upper Cretaceous of Angola. American Museum Novitates 1222:1-17
Sister taxa: none
Type specimen: AMNH 25464, a shell. Its type locality is S-3, Maria Theresa [Teba Fm], which is in a Turonian/Santonian marine horizon in the Teba Formation of Angola.
Ecology: fast-moving nektonic carnivore