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Elpistostege digit-bearing fin endoskeleton

Computed tomography of one articulated specimen reveals four proximodistal radial rows and two distal rows interpreted as digits or putative digits inside a pectoral fin that still bears fin rays.

Represented range382.31–372.15 Ma
RegionsEscuminac Formation, Miguasha, Quebec, Canada
CladesElpistostege watsoni · Elpistostegalia

Claim ledger

morphology · medium

Computed tomography of articulated Elpistostege specimen MHNM 06-2067 reveals four proximodistal radial rows, branched carpals and two distal rows interpreted as digits or putative digits, while lepidotrichia show that the appendage remained a fin.

claim:event:elpistostege-digit-bearing-fin

References

  1. Elpistostege and the origin of the vertebrate handCloutier, R.; Clement, A.M.; Lee, M.S.Y.; et al. · 2020 · DOI 10.1038/s41586-020-2100-8
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