Triproetus Explained

Triroetus is a genus of proetid trilobite found in Upper Carboniferous-aged marine strata in Russia, and Lower Permian-aged strata of Thailand, Malaysia, Spitzbergen, Yukon Territory, and Middle Permian-aged marine strata of Oman and Texas.^[1]

Notes and References

1. D. K. Brezinski. 1992. Permian trilobites from west Texas. Journal of Paleontology 66(6):924-943 https://www.jstor.org/stable/1305948?seq=7#page_scan_tab_contents