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Apolithabatiformes
Spathobatidae is an extinct Family (biology), family of Batomorphi, rays known from the Late Jurassic epoch. Spathobatidae is the only family within the Order (biology), order Apolithabatiformes. All named genera within this family are known from Europe, although a specimen from Argentina may also have affinities with these taxa. The general body plan of spathobatids is reminiscent of modern guitarfish. Taxonomic history Well-preserved holomorphic ray fossils have been known from Late Jurassic Lagerstätte deposits throughout Europe since the mid-19th century, characterized by their complete, articulated preservation including soft tissue outlines. ''Asterodermus'', ''Spathobatis'', and ''Belemnobatis'' were named in 1836, 1849, and 1852, respectively. An 1888 publication by Wilhelm Dames is the first known mention of the family Spathobatidae, albeit without a formal diagnosis or description. While this would not be accepted by the modern guidelines of the International Code of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kimmerobatis
''Kimmerobatis'' (meaning "Kimmeridge ray") is an extinct genus of spathobatid rays from the Late Jurassic (Tithonian age) Kimmeridge Clay Formation of England. The genus contains a single species, ''K. etchesi'', known from two partial, well-preserved specimens. Discovery and naming The ''Kimmerobatis'' fossils were discovered in outcrops of the upper Kimmeridge Clay Formation near Kimmeridge Bay in Dorset, southern England. The holotype specimen, MJML K874, consists of the anterior part of an individual missing the end of the tail, preserved in dorsal view. It was found in layers of the ''Pectinatus'' Zone. An additional specimen, MJML K1894, was referred as a paratype, consisting of much of the posterior part of an individual. It was found in the '' Hudlestoni'' Zone. These fossils are holomorphic specimens, meaning they comprise complete, articulated animals. Based on the absence of claspers in the holotype and their presence in the paratype, these specimens can be ide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
