A study of catsharks reveals how alterations in the expression and function of certain genes in limb buds underlie the evolution of fish fins to limbs. The findings are reported by researchers from Tokyo Institute of Technology ...
Evolution
Aug 18, 2015
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Paleontologists have documented the evolutionary adaptations necessary for ancient lobe-finned fish to transform pectoral fins used underwater into strong, bony structures, such as those of Tiktaalik roseae. This enabled ...
Evolution
Dec 22, 2014
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(Phys.org) —Paleontologists have provided a new cranial reconstruction of a long-extinct limbed vertebrate (tetrapod) from previously unrecognised specimens found in coal deposits from the Czech Republic.
Archaeology
Jul 21, 2014
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This week in the journal Proceedings of the Royal Society B, a team of French and Swedish researchers present the earliest fossil evidence for the presence of bone marrow in the fin of a 370 million-year-old fish.
Archaeology
Mar 19, 2014
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A study led by Denis Duboule shows that limbs emerged during evolution by modernisation of a preexisting DNA structure.
Plants & Animals
Jan 21, 2014
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The discovery of well-preserved pelves and a partial pelvic fin from Tiktaalik roseae, a 375 million-year-old transitional species between fish and the first legged animals, reveals that the evolution of hind legs actually ...
Evolution
Jan 13, 2014
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Pre-Cenozoic terrestrial tetrapod burrows have been found in North America, Antarctica, Morocco, and Poland. These burrows are identified as the production of dicynodonts, cynodonts, therocephalians, therapsid or mammals, ...
Archaeology
Dec 31, 2013
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Why did animals with limbs win the race to invade land over those with fins? A new study comparing the forces acting on fins of mudskipper fish and on the forelimbs of tiger salamanders can now be used to analyze early fossils ...
Plants & Animals
Jul 5, 2013
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The turtle has always been considered somewhat odd in evolutionary terms. In addition to lacking the hole in the skull—the temporal fenestra—that is characteristic of the egg-laying amniotes, the structure of its shell ...
Ecology
Jun 28, 2013
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New research has revealed that the evolution of the complex, weight-bearing hips of walking animals from the basic hips of fish was a much simpler process than previously thought.
Evolution
May 14, 2013
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