A possible Cambrian stem-group gnathiferan-chaetognath from the Weeks Formation (Miaolingian) of Utah

Simon Conway Morris, Ru Smith, Jennifer Hoyal Cuthill, Enrico Bonino & Rudy Lerosey-Aubril
In recent years the plethora of “weird wonders”, the vernacular for the apparently extinct major bodyplans documented in many of the Cambrian Lagerstätten, has been dramatically trimmed. This is because various taxa have either been assigned to known phyla or at least accommodated in larger monophyletic assemblages. Nevertheless, a number of Cambrian taxa retain their enigmatic status. To this intriguing roster we add Dakorhachis thambus n. gen. n. sp., from the Miaolingian (Guzhangian) Weeks Formation...
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