Onychophora
Metaperipatus_inae.jpg
Onychophora, yang sebagian endemik di selandia baru, memiliki ciri annelida (cacing bersegmen) sekaligus arthropoda, walau mereka lebih dekat kaitannya dengan arthropoda.

Bacaan lanjut
* Wonderful Life – Stephen J. Gould (introductory)
* Treatise on Invertebrate Paleontology Part O Arthropoda 1 – R.C. Moore (advanced)
Maas, Andreas; Waloszek, Dieter 2001: Cambrian Derivatives of the Early Arthropod Stem Lineage, Pentastomids, Tardigrades and Lobopodians - An 'Orsten' Perspective. Zoologischer Anzeiger 240: 451-459.

Sumber gambar
http://www.onychophora.com/

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