Scipsy

Skulls of adult (top) and juvenile (bottom) Bistahieversor sealeyi, a tirannosauroid that lived in New Mexico 75 million years ago. (via DinosaurTracking)

Skulls of adult (top) and juvenile (bottom) Bistahieversor sealeyi, a tirannosauroid that lived in New Mexico 75 million years ago. (via DinosaurTracking)

An impression of an ammonite (Virgatosphinctes aff.saharense) from the Orville Coast. (Scale bar = 1 cm) (via British Antarctic Survey)

An impression of an ammonite (Virgatosphinctes aff.saharense) from the Orville Coast. (Scale bar = 1 cm) (via British Antarctic Survey)

Rare insect fossil reveals 100 million years of evolutionary stasis

Researchers have discovered the 100 million-year-old ancestor of a group of large, carnivorous, cricket-like insects that still live today in southern Asia, northern Indochina and Africa. The new find, in a limestone fossil bed in northeastern Brazil, corrects the mistaken classification of another fossil of this type and reveals that the genus has undergone very little evolutionary change since the Early Cretaceous Period, a time of dinosaurs just before the breakup of the supercontinent Gondwana. […] (via phyorg)

Rare insect fossil reveals 100 million years of evolutionary stasis

Researchers have discovered the 100 million-year-old ancestor of a group of large, carnivorous, cricket-like insects that still live today in southern Asia, northern Indochina and Africa. The new find, in a limestone fossil bed in northeastern Brazil, corrects the mistaken classification of another fossil of this type and reveals that the genus has undergone very little evolutionary change since the Early Cretaceous Period, a time of dinosaurs just before the breakup of the supercontinent Gondwana. […] (via phyorg)

Ammonite II (by Felicity Dear)
Coelophysis skull and bones (by Mark Ryan)
New Prehistoric Crocodile Found in “Kitchen Counters”
Fossils found in limestone slabs once destined for Italian homes.

New Prehistoric Crocodile Found in “Kitchen Counters”

Fossils found in limestone slabs once destined for Italian homes.

Happy National Fossil Day, Belatedly (by Peter Patau)