Cephalopoda - Ammonitida - Sphenodiscidae
Alternative combination: Ammonites lobata
Invalid subtaxa: Ammonites lenticularis Owen 1852 [replaced name], Sphenodiscus lenticularis Owen 1852 [replaced name]
Belongs to Sphenodiscus according to E. S. M. Moneer et al. 2021
See also Al-Harithi and Ibrahim 1992, Böse 1928, Hyatt 1903, Kennedy 1986, Kennedy and Cobban 1996, Kennedy et al. 1997, Reyment 1955, Zaborski 1982 and Zaborski 1985
Sister taxa: Sphenodiscus aberrans, Sphenodiscus beecheri, Sphenodiscus binkhorsti, Sphenodiscus brasiliensis, Sphenodiscus corroyi, Sphenodiscus intermedius, Sphenodiscus konincki, Sphenodiscus parahybensis, Sphenodiscus pleurisepta, Sphenodiscus prepleurisepta, Sphenodiscus siva, Sphenodiscus stantoni, Sphenodiscus ubaghsi
Subtaxa: Sphenodiscus lenticularis mississippiensis Sphenodiscus lenticularis splendens
Average measurements (in mm): shell diameter 104.7
Distribution:
• Cretaceous to Paleogene of United States (1: New Jersey collection)
• Cretaceous of Egypt (2), Jordan (3), Mexico (4), Nigeria (3), United States (24: Alabama, Maryland, Mississippi, Missouri, New Jersey, South Carolina, South Dakota, Texas, Wyoming)
Total: 37 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.