KINGDOM ANIMALIA Phylum Chordata Subphylum Vertebrata Class Amphibia.
Chapter 26: Animal evolution- The Chordates Ruth Cuaboy.
How did amphibians, such as frogs, trade their tails for legs?
Osteichthyes The Bony Fish. Class Osteichthyes Characterized by having: Bone in their skeleton An operculum covering the gill openings A swimbladder or.
Chapter 42: Amphibians
Comparing Chordates A red-billed oxpecker perches on an impala These chordates have a mutually beneficial relationship Oxpeckers pick ticks and other external.
Earliest amphibians The earliest are the labyrinthodonts, which included Icthyostega and Acanthostega. During the Carboniferous a couple of major lineages.
The Skull and Visceral Skeleton
Modern Amphibians = Lissamphibia
Mammalogy Mammalian Origins. What is a mammal and why did they evolve? We have a number of problems: Ectothermy is very efficient. Reptiles experience.
Amphibians
