Cephalopoda - Ammonitida - Brancoceratidae
Alternative combination: Brancoceras orbignyi
Synonyms: Terasceras improvisum van Hoepen 1944, Terasceras subfalcatum van Hoepen 1944
Full reference: L. F. Spath. 1922. On Cretaceous Ammonoidea from Angola, collected by Professor J. W. Gregory, D.Sc., F.R.S. Transactions of the Royal Society of Edinburgh 53:91-160
Belongs to Hysteroceras according to A. Mosavinia et al. 2014
See also Förster 1975, Haas 1942, Renz 1982, Reyment 1955 and Spath 1934
Sister taxa: Hysteroceras andinum, Hysteroceras antipodeum, Hysteroceras binum, Hysteroceras bucklandi, Hysteroceras capricornu, Hysteroceras carinatum, Hysteroceras choffati, Hysteroceras falcicostatum, Hysteroceras intermedium, Hysteroceras multifalcatum, Hysteroceras ootaturense, Hysteroceras propinquum, Hysteroceras semileve, Hysteroceras subbinum, Hysteroceras varicosum, Petinoceras recuperator, Terascosceras cariniferum, Komeceras acuticostatum
Subtaxa: Hysteroceras orbignyi evoluta Hysteroceras orbignyi minor
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 21.9
Distribution:
• Cretaceous of Angola (1 collection), Antarctica (1), France (9), Iran (1), Italy (1), Madagascar (2), Mozambique (3), Nigeria (1), Serbia and Montenegro (1), Switzerland (1), Venezuela (1)
Total: 22 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.