Cephalopoda - Ammonitida - Sonniniidae
Full reference: G. E. G. Westermann. 1969. The ammonite fauna of the Kialagvik Formation at Wide Bay, Alaska Peninsula. Part II. Sonninia sowerbyi zone (Bajocian). Bulletins of American Paleontology 57:1-226
Belongs to Sonninia (Euhoploceras) according to G. E. G. Westermann 1969
Sister taxa: Sonninia (Euhoploceras) acanthodes, Sonninia (Euhoploceras) adicra, Sonninia (Euhoploceras) berckhemeri, Sonninia (Euhoploceras) dominans, Sonninia (Euhoploceras) nannomorpha, Sonninia (Euhoploceras) playfordi, Sonninia (Euhoploceras) polyacantha, Stiphromorphites schucherti
Type specimen: USNM 160236, a shell. Its type locality is USGS Mesozoic 12405, Wide Bay, which is in a Bajocian marine shale in the Kialagvik Formation of Alaska.
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 84.8
Distribution:
• Jurassic of United States (9: Alaska collections)
Total: 9 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.