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Habelia optata - The Cambrian arthropod with a 'Jacknife' head
January 1, 2018
Habelia optata(Joanna Liang/Royal Ontario Museum)
Until recently, paleontologist have had difficulty deciding where the Habeliida taxa belonged on the tree of life. A recent re-description of the arthropod habelia optata places the Habeliida next to the Chelicerata. Horseshoe crabs, sea spiders, scorpions and spiders are all Chelicerates.
Tree of life showing the relationships between arthropods (Cedric Aria)