Friday 10 January 2014

new ancient shark discovered

Ancient nursery of bizarre spoon-billed sharks discovered
Stunningly preserved baby sharks with bizarre, long snouts — as well as egg cases from the same species — may be the oldest convincing evidence of an ancient shark nursery.The fossils date to about 310 million years ago. In unpublished work on egg casings found in Germany, paleontologists have inferred the presence of another ancient shark nursery that is 330 million years old, but "this is the first time we have eggs and fossilized hatchlings in the same place, proving it's a shark nursery," said study co-author Lauren Sallan, a paleontologist at the University of Michigan, Ann Arbor. The new research, detailed Tuesday (Jan. 7) in the Journal of Vertebrate Paleontology, also revealed that even back then, the sharks, known as Bandringas, migrated to spawn. [8 Weird Facts About Sharks]
The study also revealed new details about the oddball creature's anatomy, including a long snout studded with electrical receptors and spines on its head and cheeks.

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