Tag: Hemichordata

  • Phylum Hemichordata

    Phylum Hemichordata

    Hemichordates are vermiform, solitary or colonial enterocoelous coelomate animals having intra-epidermal nervous system and a pre-oral gut with or without gillslits and without typical nephridia. Due to some similarities with chordates, some workers (Bateson, 1885) considered Hemichordata as a subphylum of the phylum Chordata. Alliance with the chordates was based on the presence of gill…