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Squatinidae
Squatiniformes is an order of sharks belonging to Squalomorphi. It contains only a single living genus ''Squatina'', commonly known as angelsharks. The oldest genus of the order, ''Pseudorhina'' is known from the Late Jurassic of Europe. Three other genera, ''Cretasquatina'', ''Cretascyllium'' and ''Parasquatina'' are known from Cretaceous fossils from North America and Europe, though the placement of ''Parasquatina'' in the order has been questioned. All living and extinct members of the order share a similar body morphology with a highly flattened body with enlarged pectoral and pelvic fins suggestive of a bottom-dwelling ambush predator ecology. Teeth have been assigned to the modern genus from the Late Jurassic onwards, but the actual genus assignment of many of these species is unclear. The earliest records that can be assigned with confidence to the modern genus are known from the Early Cretaceous (Aptian) of England. References {{Taxonbar, from=Q15207720 Cartilaginou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squatina Dumeril
The sand devil or Atlantic angel shark (''Squatina dumeril'') is a species of angelshark, family (biology), family Squatinidae, native to the northwestern Atlantic Ocean. It occurs off the eastern United States, in the northern Gulf of Mexico, and possibly in parts of the Caribbean Sea. This benthic fish, bottom-dwelling shark is found in shallow inshore waters in summer and fall, and deep offshore waters in winter and spring. The sand devil's flattened body and enlarged pectoral fin, pectoral and pelvic fins give it a Batoidea, ray-like appearance. There is a band of enlarged thorns running along the middle of its back. It is gray or brown in color, with scattered small dark spots. This species reaches in length. The diet of the sand devil consists mainly of small teleost fishes and squid, which are captured via ambush predator, ambush attack. This species is viviparous, with the unborn young nourished by their yolk sacs. Females have a multi-year reproductive cycle and give bi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |