The relative paucity of Recent morphological characters that unite pycnogonids with other arthropods or unite hexapods with any particular crustacean ... Inclusion of fossil taxa, however ...

Prior researchers have called fossils of creatures just prior to being consumed “pabulites” (Latin for “leftovers.”) In this new effort, the researchers studied an ancient crustacean ...

Scientists studying the evolution of common sea creatures whose ancestors date back nearly half a billion years have discovered what must be the oldest animal fossil whose gender is unequivocally ...