The only known Cambrian Arthropods are the Crustacea, and of these much the most abundant group is that of the Trilobita, which are altogether confined to the Palaeozoic rocks, and are by far the most.
Rock Layers: Timeline of Life on EarthEvolution is a complicated subject. While everybody understands that black bears are related to grizzly bears and we can even figure they are related to extinct bears, lots of people wonder how scientists can be so su
Steneosaurus bollensis - Steneosaurus is an extinct genus of teleosaurid crocodyliform from the Early Jurassic to Middle Jurassic (Toarcian to Callovian). Fossil specimens have been found in England, France, Germany, Switzerland and Morocco. The largest s
"Thanks to a gift by Robert Hazen, this fossil of a new Apianurus species is now a part of the Museum's collection. This beautiful fossil was discovered by paleontologist Jake Skabelund in 2011 at the Walcott-Rust Quarry in New York.