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avatar_Halichoeres

Amiskwia is a gnathiferan

Started by Halichoeres, May 06, 2019, 04:55:09 PM

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Halichoeres

May 06, 2019, 04:55:09 PM Last Edit: May 14, 2019, 04:10:01 AM by Halichoeres
Caron & Cheung describe new specimens of Amiskwia, a difficult-to-classify animal from the Burgess shale, measuring up to 31 mm in length. The new specimens possess a pharyngeal jaw apparatus similar to the present-day gnathostomulids (very small benthic worms), and are sufficient to place Amiskwia within the Gnathifera, the clade that contains arrow-worms, rotifers, thorny-headed worms, and gnathostomulids. That means they're also spiralians and are closer to, for example, mollusks or annelids than to insects or nematodes.

Some of the specimens are really phenomenal:



Open access in Nature Communications: Biology: https://www.nature.com/articles/s42003-019-0388-4
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