Triarthrus eatoni Trilobite with Eggs and Entire Ovarian Structure | New York

Trilobite approx. size: 1.25" x 0.5"

Trilobite and frond approx. size: 1.75" x 1.75"

Matrix approx. size: 4.5" x 3" x 1" at thickest part

Discovered in 2017, this very aesthetic trilobite is situated atop a branching algal frond or feeding trace fossil. The trilobite is female, with not only eggs preserved, but also the entire ovarian structure.

Triarthus trilobites from Beecher's Trilobite Bed in New York are world famous for their exquisite soft tissue preservation in iron pyrite.  Pyrite preservation has allowed for the examination of things such as gills, legs, antennae, digestive systems, and eggs, which rarely preserve.