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
Common Speedwell
The plesiadapiforms may have been primates, but they lacked certain features, such as a postorbital
Some common eye disorders. (B) Cataract of right eye. (C) Stye.
Common Antibiotics Causing Antibiotic Associated Diarrhea
Common Abbreviations and Symbols Used by Massage Therapists Cont