In Depth At the time of its description the genus Xixianykus represents the oldest known parvicursorine alvarezsaur discovered (others are dated to the Campanian/Maastrichtian eras). The legs of Xixianykus are of particular interest since they are about twenty centimetres long, which in relation to a total body length estimated at fifty centimetres long, means that … Read more
Santanaraptor: Research Database Tyrannosauroidea (Theropoda) · Early Cretaceous (~112–108 MYA) · South America — Brazil (Santana do Cariri Region) Research Note: Santanaraptor was a small tyrannosauroid theropod from the Early Cretaceous of Brazil — one of the few named theropod dinosaurs from the Araripe Basin and an important data point for understanding theropod diversity … Read more
In Depth Mesadactylus was identified from a synsacrum, the area where the spinal column meets the hind quarters. Since then more fossil material has been referred to Mesadactylus, and despite minor differences, the suggestion has been made that Mesadactylus may possibly be the same species as Kepodactylus. Further Reading – Small pterosaurs and dinosaurs from … Read more