brevasina (after Palmer)
Trilobite Order Redlichiida,
Suborder Olenellina, Family Olenellidae
Time: Late, Lower Cambrian
mm on 55 by 45 matrix
Cararra Formation, Echo Shale Member, Immigrant Pass, Nopah Range, Inyo
brevasina is not only exceedingly rare, but has an exceeding bazzar
morphology, as the pictures will attest. The Lower Cambrian was
a time that most trilobites had yet through natural selection to
acquire truly unusual features, but Peachella seems the exception.
Particularly different are the genal and axial spines, and the rather
bulbous cephalon. Peachella is only known from a legendary site
in Immigrant Pass in California.