Rocks, Fossils, and Minerals for Sale
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If you're hunting for Rocks, Minerals, and Fossils, you've hit the Mother Lode!  At Mother Lode Rock Shop, you get to pick.  Choose the exact specimens you want from our wide-ranging collection of Rocks, Minerals, and Fossils.

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Trilobites For SaleTrilobitesTrilobites For Sale

 
Rocks, Minerals, and FossilsTrilobites were an incredibly diverse and successful group of bottom-dwelling marine arthropods that lived during the Paleozoic Era.  They first appeared during the Cambrian Period and went extinct at the end of the Permian, roaming the oceans for 270 million years.  (Arthropods are the phylum of animals with jointed legs, like insects, spider, and shrimp.)  Trilobites are closely related to modern horseshoe crabs.

Trilobite means "three lobes," referring to its longitudinal division into a center axial lobe with two pleural lobes on each side.  Trilobite bodies, which were covered with calcareous exoskeletons, are also divided into the cephalon (head section), thorax (midsection), and the pygidium (tail section.)  Trilobites had a pair of antennae extending from the cephalon, and many pairs of legs and gill branches.  Although some Trilobites were blind, many had large, compound eyes with hundreds of individual lenses.

Trilobites were highly diversified and occupied an amazing range of ecological niches.  They were filter feeders, detritus eaters, scavengers, or predators, and ranged from less than a tenth of an inch to more than 2 feet in length.  So far, over 20,000 species of Trilobites have been identified.  Trilobites play a valuable role helping geologists date the age of the rock in which their fossils are found.

This page offers two different Trilobite species, both from Morocco.  Flexicalymene ouzregui is 465 million years old, and Drotops megalomanicus is 395 million years old.

Fight Fossil Fraud!

Morocco has a reputation among fossil collectors for being the source of many fake fossils.  All of the fossils offered for sale here at Mother Lode Rock Shop are guaranteed to be genuine.  The Trilobite fossils we sell are quite common and frankly, their low price means they aren't worth faking in the first place.

If you're looking to add rarer, more expensive specimens to your collection, however, fake fossils can be an issue.  Learn more about how to spot fossil fakes




Flexicalymene ouzregui
465 Million Years Old (Ordovician Period), from Morocco

A heads-up about Flexicalymene Trilobite specimens: Most Flexicalymene Trilobite fossils dug up in Morocco are broken in half during excavation, then glued back together.  Why?  The low price of these
Flexicalymene fossils means that it's simply not economically worthwhile to carefully excavate each one by hand.  The trilobite hunters pretty much dig them out using sledgehammers and pickaxes. Ouch!  This practice is so widespread that a lack of cracks in a Moroccan trilobite fossil may actually be a clue that it's a fake.


Trilobites For Sale
Trilobites For Sale
Trilobites For Sale
Trilobite (A)
2.9" x 1.5" x 0.6"
$12.00
Add to Cart
Trilobite (B)
3.25" x 1.5" x 0.75"
$12.00
Add to Cart
Trilobite (C)
2.5" x 1.75" x 0.8"
$12.00
Add to Cart
 
 
(On this page, you'll receive the exact Trilobite fossil specimen shown in each photo.)


Trilobites For Sale
Trilobites For Sale
Trilobites For Sale
Trilobite (D)
3" x 1.75" x 0.6"
$12.00
~ SOLD ~
Trilobite (E)
1.9" x 1" x 0.5"
$10.00
~ SOLD ~
Trilobite (F)
1.75" x 1" x 0.3"
$10.00
Add to Cart

 
 
 
   
 

Trilobites For Sale
Trilobites For Sale
Trilobites For Sale
Trilobite (G)
2.65" x 1.75" x 0.4"
$12.00
Add to Cart
Trilobite (H)
3.25" x 2" x 0.6"
$12.00
Add to Cart
Trilobite (I)
2.25" x 1.5" x 0.6"
$10.00
Add to Cart



(On this page, you'll receive the exact Trilobite fossil specimen shown in each photo.)

 
 
Trilobites For Sale
Trilobites For Sale
Trilobites For Sale
Trilobite (J)
3" x 1.75" x 1"
$12.00
Add to Cart
Trilobite (K)
3.25" x 1.75" x 0.5"
$12.00
Add to Cart
Trilobite (L)
3" x 1.6" x 0.4"
$12.00
Add to Cart
 
 
   
 
 
 
Trilobites For Sale
Trilobites For Sale
Trilobites For Sale
Trilobite (M)
1.75" x 1" x 0.5"
$10.00
Add to Cart
Trilobite (N)
3" x 1.5" x 1"
$12.00
Add to Cart
Trilobite (O)
3" x 1.75" x 0.7"
$12.00
Add to Cart
   
 
 
 

 
Drotops megalomanicus
395 Million Years Old (Devonian Period), from Morocco

Trilobite fossils are often found rolled up into an almost perfect sphere, like some modern-day wood lice (also called pill bugs, sow bugs, or roly poly bugs).  This ability is thought to have been a defense mechanism to protect the Trilobite's vulnerable underside from predators.  Here's a good video clip from David Attenborough's excellent BBC documentary, "First Life - Conquest":


 
Each Drotops megalomanicus specimen below is shown in two different views.  (The white marks on the dark gray matrix are added for esthetic reasons by the professional fossil preparers in Morocco.)
 
   
Trilobites For Sale
Trilobites For Sale
 
Trilobite in Matrix (A)     $55.00     Add to Cart
3" x 2.5" x 1.75" (including Matrix)
Approximate length of Trilobite (if stretched flat):  4.25"

 
   
(On this page, you'll receive the exact Trilobite fossil specimen shown in each photo.)
 
 
Trilobites For Sale
Trilobites For Sale
 
Trilobite in Matrix (B)     $75.00     Add to Cart
5.5" x 4" x 2.5" (including Matrix)
Approximate length of Trilobite (if stretched flat):  4.75"

 
 
(On this page, you'll receive the exact Trilobite fossil specimen shown in each photo.)
 
 
Trilobites For Sale
Trilobites For Sale
 
Trilobite in Matrix (C)     $55.00     ~ SOLD ~
2.75" x 2.75" x 1.25" (including Matrix)
Approximate length of Trilobite (if stretched flat):  4.25"

 
   
   
 
   
     
Trilobites For Sale
Trilobites For Sale
 
Trilobite in Matrix (D)     $55.00     Add to Cart
4" x 3" x 1.5" (including Matrix)
Approximate length of Trilobite (if stretched flat):  3.25"

 
 
(On this page, you'll receive the exact Trilobite fossil specimen shown in each photo.)
 
 
Trilobites For Sale
Trilobites For Sale
 
Trilobite in Matrix (E)     $55.00     Add to Cart
3.25" x 2.5" x 1.75" (including Matrix)
Approximate length of Trilobite (if stretched flat):  3.5"

 
 
 
 

 
Trilobites For Sale
Trilobites For Sale
 
Trilobite in Matrix (F)     $55.00     ~ SOLD ~
2.75" x 1.75" x 2" (including Matrix)
Approximate length of Trilobite (if stretched flat):  3.25"

 
 
(On this page, you'll receive the exact Trilobite fossil specimen shown in each photo.)
 
 
Trilobites For Sale
Trilobites For Sale
 
Trilobite in Matrix (G)     $75.00    ~ SOLD ~
5" x 4" x 2.25" (including Matrix)
Approximate length of Trilobite (if stretched flat):  5"

 
 
 
 
 

 
Trilobites For Sale
Trilobites For Sale
 
Trilobite in Matrix (H)     $55.00    ~ SOLD ~
5" x 3" x 1.5" (including Matrix)
Approximate length of Trilobite (if stretched flat):  3"

 
   
(On this page, you'll receive the exact Trilobite fossil specimen shown in each photo.)
 
 
Trilobites For Sale
Trilobites For Sale
 
Trilobite in Matrix (I)     $55.00     Add to Cart
3" x 2.5" x 2" (including Matrix)
Approximate length of Trilobite (if stretched flat):  4.25"

 
 
 
 
 

 
Trilobites For Sale
Trilobites For Sale
 
Trilobite in Matrix (J)     $55.00     Add to Cart
4" x 3.25" x 2.75" (including Matrix)
Approximate length of Trilobite (if stretched flat):  4"

 
  
(On this page, you'll receive the exact Trilobite fossil specimen shown in each photo.)
 
Rocks Minerals Fossils Shopping Cart
 
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Mother Lode Rock Shop
PO Box 1812
Nevada City, CA 95959
info@rocksmineralsfossils.com