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The Trilobite Gallery




Utah Trilobite Hunt
Fossil Hunting Trip Report



This Wednesday evening from 7-8 pm (eastern) is the FOSSIL Project's 2nd Fall Webinar!
Bruce MacFadden is doing the next one on "Field Notes 101"
Go to FOSSIL Webinar Series Forum for directions on logging in to participate in the free webinar!




Huntonia Trilobite Fossil Gallery

Huntonia lingulifer fossil trilobite from Oklahoma

Huntonia Trilobite Facts and Information:


Huntonia trilobites have an interesting look. They have a "snout" on the front of their cephalon, they have large, round, eyes that stick up from the cephalon, short genial spines, and a pygidial spine (tail). The main difference between the more rare Huntonia lingulifer and the more common Huntonia huntonensis is that H. lingulifer has a much longer pygidial spine.

Huntonia trilobites can range in size. Many found are between 2 and 3 inches. They can however reach sizes that approach 6". Bob Carroll had been prepping a few that were well over 5" in length when we were there.

Based on the shape of the trilobite, it roamed the bottom of the sea floor, possibly hunting or scavanging.

Taxonomy:
Phylum: Arthropoda
Class: Trilobita
Order: Phacopida
Family: Dalmanitidae
Genus:Huntonia (Huntoniatonia)
Species: lingulifer & huntonensis
Locality Information:
Huntonia Trilobites are found in the Lower Devonian Haragan Formation in Coal County, Oklahoma.
The trilobites on this page came from a collecting trip into Bob Carroll's quarry on Black Cat Mountain.


Click here to see our fossil trip to Black Cat Mountain, Oklahoma



Huntonia Fossil Examples
Huntonia lingulifer
These Huntonia are less common and have a longer pygidial spine.

huntonia lingulifer trilobite fossil.jpg





Preparation sequence of the Huntonia lingulifer trilobite we found

huntonia trilobite fossil as it was found.jpg

Here is the Huntonia Fossil as it was found.

Closer look at the Huntonia trilobite as found



The huntonia trilobite fossil halfway prepped



Fully prepped Huntonia trilobite fossil


This is the best, and only complete Huntonia lingulifer trilobite we found. When found, the cephalon was partially exposed and had a small amount of damage to it. It prepped out beautifully though!
It's about 2 3/8" (60mm) long, including the tail.

This trilobite was found on our fossil collecting trip to Black Cat Mountain, Oklahoma


Location:Black Cat Mountain, Oklahoma
Age: Lower Devonian
Formation: Haragan Formation


Huntonia huntonensis
These Huntonia are more common and have a shorter pygidial spine.
This is a pygidium of a huntonia huntonensis trilobite.  Notice the shorter spine than the lingulifer trilobite fossil.

This is a pygidium of a huntonia huntonensis trilobite. Notice the shorter spine than the lingulifer trilobite fossil.

Overview of the Orange Asaphiscus wheeleri trilobite fossil

Here are two pieces of Huntonia huntonensis. These show how large they can become. For example, the remaining part of the pygidium on the left is about 1.5 inches. Doing a quick ratio conversion, the complete trilobite would have been around 5.7"



Location:Black Cat Mountain, Oklahoma
Age: Lower Devonian
Formation: Haragan Formation