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Showing results for tags 'pseudorhina'.
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Taxonomy from Klug & Kriwet, 2012. Alternative name: Squatina alifera References: Münster, G.G. (1842) Beschreibungen einiger neuen Fische in den lithographischen Schiefern von Bayern. Beiträge zur Petrefactenkunde, 5, 55–64. Underwood, C. J. (2002): Sharks, rays and a chimaeroid from the Kimmeridgian (Late Jurassic) of Ringstead, southern England. – Palaeontology, 45 (2): 297–325. Carvalho, Kriwet & Thies (2008): A systematic and anatomical revision of Late Jurassic angelsharks (Chondrichthyes: Squatinidae). Thies, D. & Leidner, A. (2011): Sharks and guitarfishes (Elasmobranchii) from the Late Jurassic of Europe. Palaeodiversity 4: 63–184; Stuttgart. Klug, S. and Kriwet, J. (2013): An offshore fish assemblage (Elasmobranchii, Actinopterygii) from the Late Jurassic of NE Spain. Palaeontologische Zeitschrift 87(2):235-257.
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From the album: Vertebrates
Pseudorhina alifera Muenster 1843 Late Jurassic Tithonian Sappenfeld Bavaria Germany-
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Shark Pseudorhina sp. Jurassic UK Oxford Clay
JamieLynn posted a gallery image in Member Collections
From the album: Jurassic Coast UK Oxford Clay Formation
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One of my favorite sharks and a focal point of the education programs we did were Angelsharks. My son and I ended up with a fairly deep collection of Squatina material so I figured it was time to do a thread. Angelsharks are very distinctive with there large heads, flattened batoid-like bodies and broad pectoral fins. They are very well adapted to life as a bottom dwelling ambush predator. Generally found in shallow water, some such as the Sand Devil can be found as deep as 4,000 feet. They are found worldwide in temperate and tropical oceans. Angelsharks feed primarily on fish, squid and crustaceans. They will lie in wait, covered with sediment for days at a time. When prey does happen by, they use a quick strike with extensible jaws that produces suction via negative pressure. Unfortunately, Angelsharks are the most endangered order of sharks. Many of the 26 species are listed as near threatened, threatened, or endangered. Squatina makes its earliest appearance in the fossil record in the Late Jurassic. Pseudorhina specimens have been found in Germany and Spain. I don’t know if an intact fossil has been found in the United Kingdom but teeth have been found in several well known locations. The Cretaceous record shows them spreading globally. They are found in numerous sites all over the world. This continues in the Cenozoic. Many of the most well known shark tooth producing locations contain Squatina. You can also occasionally find dermal denticles and vertebrae as well. As with the other threads I’ve done, the goal is to encourage people to share their fossils and knowledge so celebrate Angelsharks with me ! For more information on Angelshark conservation, check out angelsharknetwork.com
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A close relative of the angel shark References: DETLEV THIES & ARMIN LEIDNER (2011): Sharks and guitarfishes (Elasmobranchii) from the Late Jurassic of Europe. Palaeodiversity 4: 63–184; Stuttgart. CARVALHO, KRIWET & THIES (2008): A systematic and anatomical revision of Late Jurassic angelsharks (Chondrichthyes: Squatinidae). S. Klug and J. Kriwet. (2013): An offshore fish assemblage (Elasmobranchii, Actinopterygii) from the Late Jurassic of NE Spain. Palaeontologische Zeitschrift 87(2):235-257.