Insecta: Odonatoptera: Protanisoptera: Ditaxineuridae: Ditaxineura sp.
specimen from Midco, Noble Co.
OK
Last Updated 17 Oct. 2003
In September, 2003, Joseph Hall and Michael Montgomery collected fossil
specimens from the Billings 3 locality in Noble County, Oklahoma. Among
the material collected was this portion of the outer wing of a dragonfly from
roughly the 3/4 wing length from the base. The specimen (part and
counterpart) is missing the extreme wingtip distal of about the middle of the
pterostigma. It can defintiely be assigned to the genus Ditaxineura,
but there is probably not enough of the wing available to definitely assign it
to species level. Two species were described from the Elmo, Kansas beds: D.
anomalostigma Tillyard, 1926, and D. cellulosa Carpenter, 1933.
Tasch and Zimmerman (1962) took a specimen of a compete forewing that they
assigned to D. cellulosa from the Midco, Oklahoma beds.
The figure at upper left compares the specimen from Midco to drawings of the
Elmo specimens, all to scale. The upper right photo is the part and the
lower left photo the counterpart of the specimen. This is the first
anisopterous specimen that we have taken from Midco, though there are possible
zygopterous wing fragments, and a number of Protodonata wing fragments in the
collection thus far.
Specimen determination by Roy Beckemeyer.
