Fossil Map Interactive fossil Map of Dubreuillosaurus, along with its chronological bar chart of fossil discoveries. In Depth Discovered in 1994 and originally classed as a species of Poekilopleuron, Dubreuillosaurus (Poekilopleuron valesdunensis.) was placed into its own genus in 2005 on the basis of differences of the post cranial remains of the two. Dubreuillosaurus itself … Read more
In Depth Duriavenator was for a long time attributed to Megalosaurus, part of the ‘wastebasket taxon’ effect which saw Megalosaurus becoming a home for many fossils that actually represented similar yet different dinosaurs. Further Reading – A redescription of “Megalosaurus” hesperis (Dinosauria, Theropoda) from the Inferior Oolite (Bajocian, Middle Jurassic) of Dorset, United Kingdom. – … Read more
In Depth The history of Piveteausaurus is one that is littered with comparisons to other theropod genera. The braincase that is the holotype fossil of Piveteausaurus was first described in 1923 by Jean Piveteau. Fossils of other dinosaurs had been discovered in the same region as this braincase all the way back to 1808 when … Read more
In Depth Kaijiangosaurus is only known from very fragmentary remains, so it is difficult to establish exactly where it belongs in relation with other dinosaurs. Further remains have been attributed to the genus but are currently undescribed, but some palaeontologists have leaned towards a classification within the Megalosauridae (the theropod dinosaur group typified by Megalosaurus). … Read more
In Depth The holotype tooth of this genus was originally described by the German palaeontologist Werner Janensch in 1920 as belonging to the genus Labrosaurus. The first reassignment came about when Labrosaurus was declared to be a synonym of Allosaurus, but the teeth in question were not seen to be similar to those known for … Read more
In Depth The Introduction of Megalosaurus to Science Megalosaurus was the dinosaur that started a great many things including the science of palaeontology, the debate about if dinosaurs should be called names that end with ‘saurus’ because they are not ‘lizards’, to lifetimes of fascination about the creatures that once walked the Earth when we … Read more
In Depth Eustreptospondylus was first described in 1841, but the original fossil material has since been lost. A second set of remains was discovered in 1964 and is surmised to be Eustreptospondylus based upon the description of the original material. The new material features vertebra that are lacking development of the upper parts, indicating that … Read more