Hemiphragmoceratidae is a family of endogastrically brevconic oncocerids characterized by elaborately visored apertures in which the hyponomic sinus in...
2 KB (186 words) - 19:02, 18 July 2023
Mollusca Class: Cephalopoda Subclass: Nautiloidea Order: †Oncocerida Family: †Hemiphragmoceratidae Genus: †Hexameroceras Hyatt, 1884 Species See text...
1 KB (119 words) - 03:42, 29 June 2022
Animalia Phylum: Mollusca Class: Cephalopoda Subclass: Nautiloidea Order: †Oncocerida Family: †Hemiphragmoceratidae Genus: †Tetrameroceras Hyatt, 1884...
1 KB (95 words) - 19:10, 18 July 2023
extinct genus of prehistoric nautiloids from the oncocerid family Hemiphragmoceratidae that lived in what is now Europe and North America during the Middle...
2 KB (145 words) - 23:29, 28 January 2023
orthoconic Mandaloceratidae, also discosorids, and to the oncocerid Hemiphragmoceratidae (Sweet 1964); both which also come from the Silurian. The Phragmoceratidae...
4 KB (414 words) - 19:08, 18 July 2023
Nothoceratidae (10) L Sil - U Dev Karoceratidae (3) L - M Sil, ?L Dev Hemiphragmoceratidae (5) M-U Sil, ?M Dev Acleistoceratidae (22) M Sil - M Dev Polyelasmoceratidae...
5 KB (681 words) - 00:11, 30 November 2021