PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Glyptoxoceras retrorsum

Cephalopoda - Ammonoida - Diplomoceratidae

Taxonomy

Ancyloceras retrorsum was named by Schlüter (1872) [DISTRIBUTION: Campanian; Europe; central Asia.]. It is not a trace fossil.

It was recombined as Neoglyptoxoceras retrorsum by Kennedy (1986), Arkadiev et al. (2000); it was recombined as Glyptoxoceras retrorsum by Atabekyan and Khakimov (1976), Kennedy (1993), Niebuhr et al. (2016).

Year	Name and author
1872	Ancyloceras retrorsum Schlüter p. 97 figs. pl. 30, figs. 5-10
1976	Glyptoxoceras retrorsum Atabekyan and Khakimov p. 61 figs. Pl 10, fig 3; pl 11, fig 1
1986	Neoglyptoxoceras retrorsum Kennedy p. 106 figs. Pl 16, figs 1-4,6,7;pl 17, figs 1,2; text-fig 38
1993	Glyptoxoceras retrorsum Kennedy p. 108
2000	Neoglyptoxoceras retrorsum Arkadiev et al. p. 119 figs. Pl 11, fig 2
2016	Glyptoxoceras retrorsum Niebuhr et al. p. 213 fig. 10C

Time interval	Ma	Country or state	Original ID and collection number
Late/Upper Santonian	85.7 - 83.6	France	Neoglyptoxoceras retrorsum (69867)
Early/Lower Campanian	83.6 - 72.2	Germany	Ancyloceras retrorsum (64141)
Early/Lower Campanian	83.6 - 72.2	France	Neoglyptoxoceras retrorsum (69873 69874 165904)
Late/Upper Campanian	83.6 - 72.2	Ukraine	Neoglyptoxoceras retrorsum (183315)
Late/Upper Campanian	83.6 - 72.2	Tajikistan	Glyptoxoceras retrorsum (185088 186532)
Late/Upper Campanian	83.6 - 72.2	France	Neoglyptoxoceras retrorsum (165841)
Late/Upper Campanian	83.6 - 72.2	Belgium	Glyptoxoceras retrorsum (82895)
Late/Upper Campanian	83.6 - 72.2	Austria	Neoglyptoxoceras retrorsum (48008)
Late/Upper Campanian	83.6 - 72.2	Iran	Glyptoxoceras retrorsum (174531)