Models of the Cretaceous–Tertiary impact at Chicxulub have suggested that the thermal radiation released by the impact would have been sufficient to ignite extensive wildfires. Eight non-marine K–T sequences stretching across North America have been studied in order to test this hypothesis. Multiple ...

The monophyletic Palaeozoic chelicerate order Eurypterida, contains around 65 genera and is the subject of the first large-scale phylogenetic analysis of the group (201 morphological characters for the entire Chelicerata). Many eurypterids are known from fragmentary remains, and the 40 best-known ...

A unique and spectacular Early Palaeozoic tropical archipelago is being unearthed near Churchill, Manitoba, Canada. Islands composed of Proterozoic quartzite are surrounded by shallow marine deposits of Late Ordovician and Early Silurian age. Field research since 1996 has revealed a total of 16 ...

In 1874, Charles Barrois reported a pterodactyl tibia, from the White Chalk (“Craie blanche”) which was then exploited in underground quarries at Lezennes (now in the suburbs of Lille). He referred it to Pterodactylus giganteus, a species from the English Chalk. Although no detailed description ...