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Fossil (right) of the Early Jurassic dinosaur footprint ichnogenus Anomoepus †Anomoepus †Anomoepus gracillimus †Apatopus †Atreipus †Atreipus milfordensis †Batrachopus †Batrachopus gracilis †Belodon †Belodon priscus †Brachychirotherium †Brontozoum †Brontozoum sillimanium †Calamops – type locality for genus
This list of the Paleozoic life of Pennsylvania contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Pennsylvania and are between 538.8 and 252.17 million years of age.
One of the first major fossil finds of the 20th century in Pennsylvania was the 1902 discovery of dinosaur tracks at a fisher's Quarry near Graterford in Montgomery County. [23] Another prominent early 1900s discovery was a lower jaw from the amphibian Calamops was discovered in the Late Triassic Stockton Formation at Holicong .
A new species of dinosaur has been identified more than a decade after a large number of ancient skeletons were found in Spain -- and researchers expect more species to be discovered. The ...
The critter’s robust skull had additional bones and elements that have likely disappeared with evolution, and its elongated snout paired with a short region of the skull behind the eyes was ...
The species is known mainly from a single skull, plus a few extremely thick skull roofs (at 22 cm or 9 in thick). More complete fossils would come to be found in the following years. Pachycephalosaurus was among the last species of non-avian dinosaurs on Earth before the Cretaceous–Paleogene extinction event.
The new species is called Militocodon lydae and was about the size of a chinchilla, the Denver Museum of Nature & Science said in a May 3 news release. It is part of a group of animals that would ...
A dromaeosaur whose remains have been found in Oklahoma. Possible teeth found in Maryland. Diplotomodon: Upper Cretaceous: carnivore: Dubious name for a species of tyrannosauroid from New Jersey, possibly a Dryptosaurus or a potentially new genus. Dryptosaurus: Upper Cretaceous: carnivore: Medium-sized tyrannosauroid from New Jersey.