Sinosauropteryx prima is the only known species of the extinct genus Sinosauropteryx of feathered compsognathid theropod dinosaur

it represents one of the first records of ceratopsians in this geographical region and in this time of the Cretaceous

approximately 220 million years ago

so its survival was not always guaranteed

The name "Edmontosaurus" comes from the place where the first fossil was found

Isisaurus colberti Diplomoceras Sinosauropteryx prima is the onlyIsisaurus colberti is the only known species of the extinct Isisaurus ("Indian Statistical Institute lizard") genus of titanosaurian sauropod dinosaur, which lived in the late Cretaceous period, approximately 70 million years ago, in the Maastrichtian. This dinosaur was discovered in the Lameta Formation in India and was named after the Indian Statistical Institute (ISI), where some of the fossil material was studied. The type species is Isisaurus