2001 Atlantoceratidae Korn: 207.
2002 Atlantoceratidae.-Korn & Klug: 93.

Korn (2001):

Discoidal conch, wide umbilicus. Whorl expansion rate 1.80- 2.50, imprint zone 0.10 - 0.20 of whorl height. External lobe

rather wide, as deep as the lateral lobe, broadly V-shaped/ "Morphologically intermediate between agoniatitid ammonoids with simple external lobe, and gephuroceratids with trifid external lobe. In the Atlantoceratidae, the external lobe is markedly deeper than in the Agoniatitidae, probably giving rise to the trifid external lobes which are present in Pseudoprobeloceras for the first time."

"family is morphologically intermediate between agoniatitid ammonoids with simple external lobe, and gephuroceratids with trifid external lobe. In the Atlantoceratidae, the external lobe is markedly deeper than in the Agoniatitidae, probably

giving rise to the trifid external lobes which are present in Pseudoprobeloceras for the first time"