Two primary studies derive incompatible identities from the same isolated head and mouthpart specimen.
Represented range411–407 Ma
RegionsRhynie Chert, Aberdeenshire, Scotland
CladesRhyniognatha hirsti · Insecta · Myriapoda
Claim ledger
taxonomy · contested
NHMUK PI IN 38234 was interpreted from its mouthparts as a dicondylic insect with possible pterygote affinity in 2004, but three-dimensional reanalysis in 2017 found a myriapod, possibly centipede, interpretation more likely; it must not be used as an uncontested insect or flight calibration.