Which of the following could be considered the most recent common ancestor of living tetrapods?
A) a sturdy-finned, shallow-water lobe-fin whose appendages had skeletal supports similar to those of terrestrial vertebrates
B) an armored, jawed placoderm with two pairs of appendages
C) an early ray-finned fish that developed bony skeletal supports in its paired fins
D) a salamander that had legs supported by a bony skeleton but moved with the side-to-side bending typical of fishes
E) an early terrestrial caecilian whose legless condition had evolved secondarily
Ears and grains of modern corn and its ancestor, teosinte
Common Flatwing (Austroargiolestes icteromelas: Argiolestinae)
Common phlebotomy issues.
Common phlebotomy issues.
Common Blood Chemistry Tests
Common Fluoride Products