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Norian Funcusvermis stem caecilian

Isolated named elements from at least 76 individuals place a caecilian total-group record inside a dated Norian bonebed.

Represented range223.036–218.043 Ma
RegionsThunderstorm Ridge, upper Blue Mesa Member, Chinle Formation, Arizona, USA
CladesFuncusvermis gilmorei · Gymnophionomorpha

Claim ledger

fossil-range · medium

At least 76 individuals represented by isolated three-dimensional Funcusvermis elements occur in a U–Pb-bracketed Norian bonebed and support a caecilian total-group record, but not crown Gymnophiona, one articulated animal or a global first appearance.

claim:event:norian-funcusvermis-stem-caecilian

References

  1. Triassic stem caecilian supports dissorophoid origin of living amphibiansKligman, B.T.; Gee, B.M.; Marsh, A.D.; Nesbitt, S.J.; Smith, M.E.; Parker, W.G.; Stocker, M.R. · 2023 · DOI 10.1038/s41586-022-05646-5
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