The oldest mineralized sponges in the world found in Ciudad Real

An international and multidisciplinary piece of research involving the participation of Universidad Complutense de Madrid (UCM) concludes with the discovery of the mineralised fossil remains of the oldest sponges in the world—530 ...

Ecologists receive mixed news from fossil record

Paleontologists can't always get what they want, to paraphrase the Rolling Stones, but sometimes they can get what they need, according to a study that will appear in the May issue of the American Naturalist.

Rare fossil discovery raises questions

Adult and juvenile remains of a giant rodent species (Isostylomys laurdillardi) have been uncovered by researchers, in the Río de la Plata coastal region of southern Uruguay, raising questions about classification within ...

New ornithomimosaur from Arkansas described

Last week, a new species of dinosaur was described in the Journal of Vertebrate Paleontology. The dinosaur, Arkansaurus fridayi, is an ornithomimosaur the Early Cretaceous of Arkansas, and represents the first dinosaur to ...

An 'instruction' to the crocodylian skull

The braincase of crocodylians has a distinctive structure. Unlike evolutionary relatives (birds and squamates), in crocodylians, all braincase bones are rigidly fixed together and form an akinetic structure. In the process ...

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