WebSphenodusAgassiz, 1843 Orthacodontidaeis an extinct familyof sharksin the order Synechodontiformes. It contains twelve species within three genera. Some authors … WebMay 1, 2024 · Two species of this genus are known from the Cretaceous deposit: H. microdon ( Aggasiz 1843) and H. gracilis ( Davis 1887 ). However, as Cappetta (2012) pointed out, Cretaceous species of Hexanchus requires revision because H. microdon was diagnosed based on poor-quality figures of type species.
Sphenodus (Chondrichthyes, Neoselachii) from the Upper …
WebAgassiz, 1843: Sphenodus: genus: belongs to Lamninae: stated without evidence: Hay, 1902: Sphenodus: genus: belongs to Lamnidae: stated without evidence: Jordan, 1963: … WebChlamydoselachidae. سداسية الخياشيم Hexanchidae. The Hexanchiformes / hɛkˈsæŋkᵻfɔrmiːz / are the order consisting of the most primitive types of sharks, [أ] and numbering just seven extant species. Fossil sharks that were apparently very similar to modern sevengill species are known from Jurassic specimens. [2] 27二进制是多少
Alexander Agassiz - Wikipedia
WebMar 18, 2024 · The low-diversity neoselachian fauna includes Notidanodon sp., Sphenodus sp., and indeterminate synechodontiform, possible indeterminate scyliorhinids, and further, yet indeterminate forms. Actinopterygians are represented by Caturus sp. and indeterminate actinopterygian teeth and scales. ... Genus Sphenodus Agassiz, 1833–1844. Sphenodus sp. WebA New Squalid Species of the Genus Centroscyllium from the Emperor Seamount Chain First Age and Growth Estimates in the Deep Water Shark, Etmopterus Spinax (Linnaeus, 1758), by Deep Coned Vertebral Analysis WKSHARK6 Report 2024 And Their Functional, Ecological, and Evolutionary Implications Webthe largest shark teeth present were those of Sphenodus Agassiz, 1843, hexanchids, and lamniforms. If hand picking of specimens in the field is the only technique employed the most likely specimens to be collected are isolated teeth of these sharks, if they occur in sediment of that age. It is hardly surprising that the Danian 27代理官网 下载