WebSphenodus gigas Agassiz, 1843 among the fossils found Slightly later, Di Stefano & Cortese (1891) mentioned the presence of Sphenodus from the same localities as
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WebA Sphenodus a porcos halak (Chondrichthyes) osztályának fosszilis Synechodontiformes rendjébe, ezen belül az Orthacodontidae családjába tartozó nem. Rendszerezés. A nembe … WebThe morphology and vascularization of the teeth are comparable to those of modern hexanchiform and echinorhinid squaliform sharks, being most similar to those of Echinorhinus.Amultilayered enameloid layer is not discernible in Mcmurdodus teeth, but a parallel-fibred layer is possibly present.
WebSphenodus Agassiz, 1843 Sphenodus alpinus Gümbel, 1861 Sphenodus longidens Agassiz, 1843 Sphenodus lundgreni Davis, 1890 Sphenodus macer Quenstedt, 1852 Sphenodus nitidus Wagner, 1862 Sphenodus planus Agassiz, 1843 Sphenodus rectidens Emmons, 1858 Sphenodus robustidens Seguenza, 1900 Sphenodus tithonius Gemmellaro, 1871 WebSphenodus Agassiz, 1843. Hexanchiformes Cow sharks. Hexanchus Rafinesque, 1810 Sixgill shark. Heptranchias howelli (Reed, 1946) Related collections. Vertebrate …
WebMay 13, 2024 · The genus Sphenodus Agassiz, 1843, includes numerous described species ranging from the Sinemurian to the Danian (see Duffin and Ward 1993). However, the … 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]
WebThe tooth is of low-crowned, multicuspid type; the elongate tooth crown has stout crown shoulder and well-developed, rounded labial peg; the cusp and cusplets are moderately tumid, and have a few strong and curved folds; …
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. mouth in arabic languageWebSphenodus Name Synonyms Sphaenodus Costa, 1856 Homonyms Sphenodus Agassiz, 1843 Bibliographic References. Neave, S. A. (1939-1996). Nomenclator Zoologicus vol. 1 … hearusa job reviewsWebGenus Sphenodus Agassiz 1843 Sphenodus longidens Agassiz 1843 Material. Three NGM teeth, inventory numbers: P.3590 (two specimens, P.3590a and P.3590b) from Bucegi and P.21540 (one specimen) from the Rucăr area. Description: The first tooth (P.3590) (Figs. 2/1a-1b) exposes a long and slender cusp with its basal portion hearusa login providerWebSphenodus Agassiz, 1843. Notidanus Cuvier, 1816. Related collections. Vertebrate Paleontology. Museum practice and privacy policy (GDPR) When new material or a new … hearusa in floridaWebWe present new records of chondrichthyans recovered from strata of Maastrichtian age of the López de Bertodano Formation, Seymour (=Marambio) Island, and from levels of latest Campanian age of the Santa Marta Formation, James Ross Island, both located in the eastern Antarctic Peninsula. hearusa inverness flWebMay 1, 2014 · Family ORTHACODONTIDAE Glickman, Genus SPHENODUS Agassiz, 1843 Type species Lamna longidens Agassiz, 1843 from the Late Jurassic of Switzerland. Sphenodus lundgreni (Davis, ) Figure A–B Material Chalk: A single tooth from Stevns Kridtbrud (MGUH 29885). Neoselachian teeth from the H øjerup M ember and the F iskeler … mouth impetigoWebMar 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. hearusa insurance