They are members of the phylum Echinodermata, which first appeared during the Cambrian explosion. Their list of close relatives includes starfish, sand dollars (themselves irregular, flattened sea ...
ZME Science on MSN
An 82-Year-Old Fossil Hunter Found a 150-Million-Year-Old Insect That May Redraw the Evolutionary Map
His fossils, collected over a decade at a Jurassic site in New South Wales, have revealed a new species of non-biting midge.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback