"New Study Confirms Sharks Arose from Acanthodian Fishes" Topic
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|Tango01||15 Apr 2017 11:42 a.m. PST|
"Analyzing a well-preserved fossil of Doliodus problematicus, a sharklike fish that lived 400-397 million years ago (Devonian period), AMNH curator John Maisey and co-authors identified it as an important transitional species that points to sharks as ancanthodians' living descendants.
"Major vertebrate evolutionary transitions, such as ‘fin to limb' and ‘dinosaur to bird' are substantiated by numerous fossil discoveries. By contrast, the much earlier rise of sharklike fishes within jawed vertebrates is poorly documented," Dr. Maisey said.
"Although this ‘fish to fish' transition involved less profound anatomical reorganization than the evolutions of tetrapods or birds, it is no less important for informing the evolutionary origins of modern vertebrate diversity…"
|cfielitz||16 Apr 2017 5:10 p.m. PST|
I know Maisey, but I need to read the paper to be convinced.