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Haramiyavia and a matrix-defined crown boundary

CT and dental-wear evidence from named Haramiyavia specimens informed a phylogenetic rescoring that placed Late Triassic haramiyids outside crown Mammalia in this study.

Represented range205.7–201.4 Ma
RegionsTait Bjerg Beds, Fleming Fjord Formation, East Greenland
CladesMammaliaformes · Haramiyida · Haramiyavia clemmenseni

Claim ledger

topology · medium

CT anatomy and dental wear from MCZ7/95A–B and MCZ10/G95 informed a rescored matrix that placed Late Triassic haramiyids outside crown Mammalia, while the postdentary trough supports rather than directly preserves a mandibular middle ear.

claim:event:haramiyavia-ct-crown-boundary

References

  1. Mandibular and dental characteristics of Late Triassic mammaliaform Haramiyavia and their ramifications for basal mammal evolutionLuo, Z.-X.; Gatesy, S.M.; Jenkins, F.A. Jr.; Amaral, W.W.; Shubin, N.H. · 2015 · DOI 10.1073/pnas.1519387112
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