
Group of the month: Phylum Chordata, subphylum Tunicata (Previously Urochordata)
Written by Line Willersrud and Rita M. Austin The phylum Chordata contains the three subphylums, Tunicata, Cephalochordata and Vertebrata. Vertebrata, which includes humans and all other mammals, birds, fishes, amphibians and reptiles, are differentiated from other chordates by having an enclosed vertebral column, the backbone. But inclusion in […]