FIG. 11. — A1-A3, Antaganides grulkei n. gen., n in Antaganides n. gen., a new genus of Middle Jurassic nautiloid, ancestor of Pseudaganides Spath, 1927, with discussion on the phyletic origin of the family Pseudonautilidae

FIG. 11. — A1-A3, Antaganides grulkei n. gen., n. sp., holotype (2023.PB.N97), adult shell, les Hauts-de-Rochefort quarry, Middle Bathonian, Progracilis Zone; B1-B3, Antaganides grulkei n. gen., n. sp., specimen 2023.PB.N134, Champs-Albert near la Crèche, Upper Bathonian, base of the Retrocostatum Zone; C1-C3, Pseudaganides aquitanense n. sp., holotype (2023.PB.N96), adult shell, Aiffres, Upper Bathonian, Retrocostatum Zone; D1, D2, Pseudaganides aquitanense n. sp., specimen 2023.PB.N106, Champs-Albert near la Crèche, Upper Bathonian, Retrocostatum Zone; E1, E2, Pseudaganides aquitanense n. sp., paratype (2023.PB.N124), bed 8b, Buffevent quarry near Niort, Upper Bathonian, Retrocostatum Zone. *, end of the phragmocone. Scale bars: 1 cm.