Tag: thorax
Fossil Friday: New Kind of Silverfish Trapped in Sticky Resin
These incongruent or homoplastic characters are a notorious problem for phylogenetics and contradict the evolutionary prediction of a nested hierarchy.
Arthropod Architects Amaze Engineers
They appear in the early Cambrian fossil record: the first examples of the most diverse phylum on earth. Who knew their skills would become the envy of human engineers?