Green river formation plant fossils

Unidentified plant fossils from the famous Green River formation, a ‘lagerstätte’ spanning areas of Colorado, Utah, and Wyoming.


Only 2 left in stock

Green river formation plant fossils

Unidentified plant fossils from the famous Green River formation, a 'lagerstätte' spanning areas of Colorado, Utah, and Wyoming. In this case, the pieces are from Bonanza, Utah, USA.

A lagerstätte refers to an area of sedimentary rock with an exceptional level of preservation, in which uncommon fossils can be found - such as fossils with soft tissue preservation, leaves, flies, insects - and larger animals too.

Probably the most well known fossils from the Green River Formation are the fossil fish 'Knightia', sold worldwide in museum gift shops. However, there is a huge range of fossils to be found in the formation.


These are all plant fossils, typically leaves and seedpods, which have not been identified as any particular species.

The preservation of these pieces is reasonable and would add a nice specimen for any beginner or budding fossil collector.


The matrix stone around the fossils measures approximately 30-50MM wide in most of these pieces, and the fossils themselves are typically 15-30MM in length. There is usually only one fossil on each piece.

You'll receive a randomly picked piece from our stock - as a budget item I'm afraid I can't take a photograph of each individual specimen.

Frequently asked questions and delivery information

How do we grade stones?

There is no overall universal grading system for the majority of our products. As such, the grades we use are internal only. They simply refer to higher and lower qualities, but they may be entirely different grades to other websites. C grade pieces are of lower quality than B grade, which is lower than A grade.


How does our ordering and delivery process work?

You place an order via the website. When it’s been picked and packed, your order will be marked as completed and dropped off at our local post office. We have an account with the post office called a “Drop and Go” account, which allows the post office staff to process our parcels when they have free time, rather than me queuing up and delaying everyone else.

I get tracking information etc online when this has been completed. I typically do not send tracking information to customers unless they request it – but if you’ve requested tracked postage, it has been sent tracked! If you have any worries or concerns about your parcel being delayed please feel free to get in touch and I’ll send the tracking info over! We also get delivery confirmations for parcels over 25MM thick by default.


How do international orders work?

After Brexit, with the UK leaving the European Union, certain things have changed with regards to international orders. European Union customers will now likely be liable to pay the same amount of import VAT as any other international customers. You will be responsible for any customs and import fees.


I’d like to return my order for a refund.

No problem at all – just get in touch and we’ll arrange it. You can read our full returns policy here.


What payment methods do you accept?

I can accept Paypal, Stripe, cheque, and direct bank transfers. Paypal and Stripe will both allow you to pay with credit and debit cards.



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