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Ellimmichthys
''Ellimmichthys'' is an extinct genus of freshwater Otocephala, clupeomorph fish belonging to the order Ellimmichthyiformes, of which it is the type genus. It was a distant relative of modern Herring, herrings and Anchovy, anchovies. It inhabited freshwater Rift lake, rift lakes in the supercontinent of Gondwana, West Gondwana (comprising modern South America and Africa) during the Early Cretaceous, and fossil remains are known from formations in both South America (Brazil) and Africa (Equatorial Guinea). Taxonomy The following species are known: * †''E. longicostatus'' (Edward Drinker Cope, Cope, 1886) - Berriasian/Valanginian of Bahia, Brazil (Candeias Formation) (=''Diplomystus longicostatus'' Cope, 1886) (type species) * †''E. goodi'' (Charles R. Eastman, Eastman, 1912) - Aptian/Albian of Equatorial Guinea (Cocobeach Formation) (=''Diplomystus goodi'' Eastman, 1912, ''D. elberti'' Weiler, 1922, ''Ellimma guineensis'' Gayet, 1989) * †''E. spinosus'' de Figuereido & Gal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berriasian
In the geological timescale, the Berriasian is an age/stage of the Early/Lower Cretaceous. It is the oldest subdivision in the entire Cretaceous. It has been taken to span the time between 145.0 ± 4.0 Ma and 139.8 ± 3.0 Ma (million years ago). The Berriasian succeeds the Tithonian (part of the Jurassic) and precedes the Valanginian. Stratigraphic definition The Berriasian Stage was introduced in scientific literature by Henri Coquand in 1869. It is named after the village of Berrias in the Ardèche department of France. The largely non-marine English Purbeck Formation is in part of Berriasian age.In fact, the first rocks to be described of this age were the beds of the English Purbeck Formation, named as the Purbeckian by Alexandre Brongniart in 1829 following description by Henry De la Beche, William Buckland, Thomas Webster and William Henry Fitton. The base of the Berriasian, which is also the base of the Cretaceous System, has traditionally been placed at the first ap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |