Vidria vespa is a proetid trilobite belonging to the family Phillipsiidae. The fossils are found in Middle Permian-aged marine strata of Western Texas. It is unique among Permian-aged trilobites in having a posterior spine emanating from the pygidium of the adult (two such posterior spines are present in immature individuals).[1]

Vidria
Temporal range: Guadalupian
reconstruction of adult and juvenile
Scientific classification
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Vidria

Weller, 1944
Binomial name
Vidria vespa
Weller, 1944[1]

References

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  1. ^ a b Weller, J. Marvin. "Permian trilobite genera." Journal of Paleontology (1944): 320-327.
  • Proetida fact sheet [1]