North America, Wyoming, Green River Formation, Eocene Period, ca. 53.5 to 48.5 million years ago. A shoal of Knightia fish that fossilized together in what is often called a "life assemblage" because the stone matrix contains a once living community of creatures that died while they were behaving as the normally would - likely hit by a sudden "catastrophic mass mortality" event. A great display piece for the number of fossils contained in detail! Size: 15" L x 0.5" W x 13" H (38.1 cm x 1.3 cm x 33 cm)

Provenance: private Fayetteville, Arkansas, USA collection; ex-private Estate collection, Fayetteville, Arkansas, USA, acquired 1960 to 2024

All items legal to buy/sell under U.S. Statute covering cultural patrimony Code 2600, CHAPTER 14, and are guaranteed to be as described or your money back.

A Certificate of Authenticity will accompany all winning bids.

We ship worldwide to most countries and handle all shipping in-house for your convenience.

#185545

Irregular shaped peripheries. Losses to surface layers and missing / losses to some fish fossils. Majority of fossils are intact with nice preservation to bone and even some soft tissue. No repairs or restoration.