Fossil.net.com presented by EXTINCTIONS Inc.

SCULPTED STONE - THE BEST OF THE BEST \| EXTINCTIONS.COM
Dinosaurs \| FossilsForSale \| NatureStore \| DinoStore \| FossilAuction \| Trilobites
AmberCompany \| FossilFish \| SharkTeeth \| FossilPlants \| Crinoids \| WholesaleFossils

To Order Toll Free Call 1-877-EXTINCT

Thursday October 31, 2024 at 7:39:13 PM (EST)

Fossil.net ONLINE MUSEUM

Search:

18167 Individual Specimens and Counting...

Site Map

Dinosaurs

- Dinosaur Teeth

- Dinosaur Claws

- Dinosaur Eggs

- Dinosaur Tracks

- Dinosaur Bones

Keichousaurs

Mosasaurs

Crocs / Gators

Turtles

Birds

Shark Teeth

Fossil Fish

Cave Bears

Mammoths

Oreodonts

Bison

Other Vertebrates

Trilobites

Eurypterids

Crabs

Shrimp

Lobsters

Fossil Insects

Insects in Amber

Other Arthropods

Crinoids

Cystoids

Blastoids

Echinoids

Starfish

Other Echinoderms

Ammonites

Other Cephalopods

Brachiopods

Gastropods

Bivalves

Corals

Sponges

Bryozoans

Other Invertebrates

Fossil Plants

- Leaves

- Ferns

- Cones

- Flowers

- Petrified Wood

Amber (Fossil Sap)

Stromatolite

Coins / Currency

Books

Sculpted Stone

Replicas

Meteorites

Minerals

EXTINCTIONS CHOICE- Many St. Louis Archaeocidaris
ECHINOIDS • UNITED STATES
Stock Number XIECA903
EXTINCTIONS Choice

Name:   Archaeocidaris wortheni
Age:  Mississippian
Formation:  St. Louis Formation
Location:  St. Louis, Missouri
Size:  Plate is 10.7 inches across!
This specimen is not for sale
Click here for similar specimens that are for sale

This is a very rare echinoderm fossil. It is a fabulous MULTIPLE Archaeocidaris wortheni from the Mississippian of St. Louis. Fossil echinoids from the St. Louis area are famous around the world and have been extremely sought-after by collectors for decades. These spiny urchins are much larger than the Lepidocidaris found in the Mississippian Warsaw Formation, and are OLDER than the Pennsylvanian Archaeocidaris from Texas. These massive urchins are complete with MANY long spines still intact. Most of the types of urchins from this site are much smaller (there are three species!), and larger ones are extremely rare. There are also many of the smaller types of urchins preserved on this plate. The echinoids display well on the very large plate of dense limestone. This is a very unusual MULTIPLE example of large Mississippian Archaeocidaris from the St. Louis Formation.