Abyssophthalmus aff. bellaii (Crônier & Boursicot, 2009) (Figs 6F; 12D)

Nodoprosopon? bellaii Crônier & Boursicot, 2009: 1279, 1280, fig. 3h-j, pl. 2[figs 1-3].

TYPE MATERIAL. — Holotype by monotypy USTL 3852 (Boursicot coll.).

TYPE LOCALITY. — Montreuil-Bellay, Maine-et-Loire department, France.

TYPE AGE. — Middle Jurassic, early Callovian (Gracilis ammonite biozone).

EXAMINED MATERIAL. — One isolated carapace MNHN.GG.Gg2005- 8347d, associated to specimen MNHN.GG.Gg2005-8347c of Glyphea dressieri .

DESCRIPTION

Carapace

Carapace longer than wide; carapace groove pattern: see diagnosis of Abyssophthalmus; lateral margins parallel sided; protogastric region with strong tubercle differentiated from slightly inflated hepatic region; hepatic region with strong tubercle; inflated mesogastric region; wide urogastric lobe; pentagonal cardiac lobe; inflated mesobranchial region; inflated epibranchial lobe; posterior margin strongly concave axially;

DISCUSSION

Nodoprosopon bellaii was tentatively assigned to Abyssophthalmus by Krobicki & Zatoń (2016), followed by Schweitzer et al. (2018). We concur with this interpretation. The general morphology and the ornamentation of the present carapace recall that of Abyssophthalmus aff. bellaii .