''Yinpanolithus'' is an
extinct
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...
genus of
trilobites in the family
Trinucleidae
Trinucleidae is a family of small to average size asaphida, asaphid trilobites that first occurred at the start of the Ordovician and became extinct at the end of that Period (geology), period. It contains approximately 227 species divided over 5 ...
. 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.
References
Trinucleidae
Asaphida genera
Ordovician trilobites
Ordovician trilobites of Asia
{{Asaphida-stub