| 词条 | Vidria |
| 释义 |
| fossil_range = Middle Permian | image = Vidria vespa.jpg | image caption = reconstruction of adult and juvenile | regnum = Animalia | phylum = Arthropoda | classis = Trilobita | ordo = Proetida | familia = Phillipsiidae | genus =Vidria | genus_authority = Weller, 1944 | binomial = Vidria vespa | binomial authority = Weller, 1944[1] }}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] References1. ^1 Weller, J. Marvin. "Permian trilobite genera." Journal of Paleontology (1944): 320-327.
4 : Permian trilobites|Trilobites of North America|Philipsidae|Proetida genera |
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