Early land vertebrates.
Carroll
Robert
R
D000663:Amphibians / Q000033:anatomy & histology* / Q000145:classification; D000818:Animals; D005075:Biological Evolution; D005399:Fishes; D005580:Fossils; D008124:Locomotion; D010802:Phylogeny; D017689:Polydactyly; D012104:Reptiles; D012606:Scotland; D012863:Skeleton; D013045:Species Specificity