Onychophora - ZOO115 Invertebrate Zoology Phylum...

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ZOO115 Invertebrate Zoology Phylum Onychophora
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Onychophora (Talon bearer)- General Characteristics Common name: Velvet worms Intermediate between annelids and arthropods ~110 species Fossil records from Early Cambrian period (~530 MYA) Terrestrial Dark humid tropical regions http://www.mnhn.fr/assoc/myriapoda/IMAGES/OOPERIHI.JPG
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Onychophora - General Characteristics Soft-bodied Wormlike 5mm-15cm in length Segmented with serial repetition of organs http://www.cals.ncsu.edu/course/zo150/mozley/fall/Onychophora.jpg
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Onychophora – Support Body is covered by thin chitinous cuticle Similar to arthropods Highly permeable Flexible Accordion-like Longitudinal, circular, diagonal and surface oblique muscles Body wall, other than cuticle, similar to Annelids Longitudinal muscle Circular/Diagonal muscle Hemocoel Slime glan Oblique muscle Attached to surface
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Onychophora - Locomotion Trunk bears 13-43 pairs of appendages with claws
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This note was uploaded on 09/08/2010 for the course ZOOL 115 at San Jose State University .

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Onychophora - ZOO115 Invertebrate Zoology Phylum...

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