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Psocodea Look for this name in NCBI Wikipedia Animal Diversity Web
Wolfe et al. 2016
node minimum age |
This fossil is sourced from amber mines in the Hukawng Valley of Kachin State, northern Myanmar (formerly Burma). The depositional age of Burmese amber was estimated from U-Pb dating of zircons from the volcaniclastic matrix surrounding the amber (Shi et al.,2012). Shi et al. (2012) argue the amber is not older than its associated sediments, as burial and preservation would have to be rapid for survival of organic material, so the amber was probably formed at, but not earlier than the U-Pb date: at 98.79 Ma±0.62 Myr. Therefore, a minimum age for any fossil from Burmese amber deposits is 98.17 Ma.
node maximum age |
A soft maximum age is estimated from R. praecursor, the oldest hexapod, from the Early Devonian (Pragian) Rhynie Chert of Aberdeenshire, Scotland. Spore assemblages of the Windyfield and stratigraphically underlying Rhynie Chert are dated to the early but not earliest Pragian to early (earliest?) Emsian (polygonalis-emsiensis Spore Assemblage Biozone) (Parry et al., 2011). Radiometric dating of the underlying Milton of Noth Andesite at ca. 411 Ma (Parry et al., 2011, 2013) has been subject to a dispute over its temporal relationship to hot spring activity associated with the cherts (Mark et al., 2011, 2013) and predates the biostratigraphic dating of the Rhynie Chert relative to the global dating of the base of the Pragian Stage. Therefore, a soft maximum constraint may be defined at 411 Ma for the Rhynie Chert.
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In a morphological phylogenetic analysis, C. burmitica was a stem group member of Liposcelididae (Grimaldi and Engel, 2006). Liposcelididae is an extant family of Psocoptera, thus within the crown group of Psocodea.
Grimaldi, D., Engel, M.S., 2006. Fossil Liposcelididae and the lice ages (Insecta: Psocodea). Proc. R. Soc. B Biol. Sci. 273, 625–633.
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