Challengers of the Unknown © DC Comics
Ref.: Fossil steroids record the appearance of Demospongiae during the Cryogenian period. 2009. G. D. Love et al. Nature 457: 718-721
Go read the full story over at the Palaeoblog.
They’ve been nice enough to link to us many times over the past few years!
They’ve been nice enough to link to us many times over the past few years!
