Yinpanolithus Explained

Yinpanolithus is an extinct genus of trilobites in the family Trinucleidae. The genus lived during the later part of the Arenig stage of the Ordovician Period, a faunal stage which lasted from approximately 478 to 471 million years ago.^[1]

Notes and References

1. Sepkoski. Jack. A compendium of fossil marine animal genera (Trilobita entry). Bulletins of American Paleontology. 364. 560. 2002. 2008-01-12 .