Hexanchiformes - Wikipedia
The Hexanchiformes / h ɛ k ˈ s æ ŋ k ɪ f ɔːr m iː z / are a primitive order of sharks, [a] numbering just seven extant species in two families. Fossil sharks that were apparently very similar to …
Hexanchiformes: Cow Sharks
The hexanchiform sharks are mysterious creatures that lead secret lives, often in the deepest, darkest, coldest parts of the ocean. Due to the inaccessible depths inhabited by these sharks, …
Cow shark - Wikipedia
A possible hexanchid tooth is known from the Permian of Japan, making the family a possible extant survivor of the Permian–Triassic extinction. [3] Their most distinctive feature, however, …
Hexanchiformes - an overview | ScienceDirect Topics
The Hexanchiformes (Cow and Frilled Sharks) comprises two families, four genera, and seven species of morphologically distinct sharks, in that they are the only group to possess six or …
Hexanchiformes - Animalia
The Hexanchiformes are a primitive order of sharks, that numbering just seven extant species in two families. Fossil sharks that were apparently very similar to modern sevengill species are …
Hexanchiformes (Six- and Sevengill Sharks) - Encyclopedia.com
Hexanchiforms are an ancient lineage, as well-documented fossil skeletons of Notidanoides muensteri date from the late Jurassic (some 150 million years ago, or mya) Solnhofen …
What Are Cow Sharks (Or Hexanchiformes)? - sharksinfo.com
Going back to prehistoric times, the Cow sharks have been considered the ancient group of sharks belonging to an order Hexanchiformes. The fossil records of Cow sharks depicted that …