Unearth ancient fossils in Wyoming’s renowned Green River Formation with expert guides. Join this hands-on adventure for a unique glimpse into prehistoric life and geological history.
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Difficulty
moderate
Duration
2–4 hours
Fitness Level
Participants should be in decent physical condition, able to work on uneven terrain for extended periods.
Wildlife
History
Fossil discoveries in Green River date back to the early 20th century, revolutionizing our understanding of prehistoric ecosystems.
Conservation
The site follows strict guidelines to preserve fossils and minimize environmental impact, supporting ongoing scientific research.
In Stone Fossils LLC
Unearth ancient fossils in Wyoming’s renowned Green River Formation with expert guides. Join this hands-on adventure for a unique glimpse into prehistoric life and geological history.
In Stone Fossils LLC is a paleontology tour operator based in Kemmerer, Wyoming that runs guided fossil-dig experiences at the Green River Formation.
The company offers four primary experiences: the Daytime Paleontology Experience with personalized one-on-one guidance; the Luxury Nighttime Paleontology Experience focused on upscale nighttime digs in productive beds such as the 18-inch Layer and sandwich beds; The Ultimate Fossil Dig Adventure, which combines guided excavations, exclusive access to specific fossil layers, hands-on preparation workshops, and luxury accommodations with curated dining; and the Baseline Nighttime Paleontology Experience, a six-hour dig where participants uncover ancient fish fossils and can keep their finds, with limited availability noted for the 2025 season.
In Stone Fossils emphasizes hands-on excavation, trained guides, and educational value. Guides demonstrate safe excavation techniques and fossil preparation methods during fieldwork and workshop sessions. Trips are suitable for families, collectors, and individual enthusiasts seeking immersive paleontology activities. Fieldwork takes place on-site at the Green River Formation, a recognized Eocene fossil locality, and reservations are recommended when booking limited nighttime or season-specific experiences.
By combining field excavation, guided instruction, and practical preparation workshops, In Stone Fossils provides authentic access to productive fossil layers while prioritizing safety, education, and responsible collecting practices.
Location
Kemmerer, WY
Base camp near the dig site
Fossil Site
Green River Formation
Eocene fish and fossil beds
Guided Tours
4 Experiences
One-on-one and group options
Season Availability
Limited for 2025
Limited spots for 2025 season
Secure limited-availability daytime, nighttime, luxury, or multi-day fossil digs at the Green River Formation — book now to guarantee participation.
Bring sturdy footwear
Wear durable, closed-toe shoes suitable for rocky terrain in fossil excavation sites.
Stay hydrated
Carry plenty of water, especially during warm days in the field.
Wear sun protection
Use sunscreen, hats, and sunglasses to shield from sun exposure.
Prepare for comfortable dining
Gourmet meals are included; bring extra snacks if desired.
Field hat
Protects against sun during outdoor fossil digs.
spring;summer;fall
Work gloves
Keeps hands safe while handling fossils and equipment.
Sturdy backpack
Carries tools, water, and personal items.
Magnifying glass
Helpful for examining fossils more closely.