Adaptive responses to Ordovician-Silurian #environmental changes shaped the morphological diversity and #evolution of Osteostraci
doi.org/10.3897/arph...
Osteostracans are a Silurian-Devonian clade of jawless stem gnathostomes, and, as the putative sister group to jawed vertebrates, play a fundamental role in the study of the origin of jaws. Despite th...
