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-   -   Zoology cladogram (https://www.askmehelpdesk.com/showthread.php?t=6226)

  • Nov 14, 2004, 12:00 PM
    Tya
    Zoology cladogram
    I'm trying to create a cladogram, and I'm not sure if I have it correct. I was given the Taxa Hydrozoa, Bivalvia, Nematoda, Mandibulata, Echinoidea, Squamata and Mammalia and organize them with six branches. I know that Squamata and Mammalia are a sister group. They are also deuterostomes along with Echinoidea. Nematoda and Mandibulata are a sister group, and they are protostomes. But do Hydrozoa and Bivalvia go together? Even though Bivalvia is a protostome and Hydrozoa isn't? I can't find common characteristics between them.
  • Nov 16, 2004, 09:19 PM
    Tya
    Zo cladogram
    I figured it out... Hydrozoa should be an outgroup, and the protostomes and deuterostomes should be grouped on separate branches.

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