Mazon Creek Fossil Fauna - Index

The fossil images contained in these galleries are just a small percentage of the specimens I’ve found in the field or studied at museums and in the collections of other enthusiastic collectors. From my volunteer curatorial work and friendships within the fossil community, I’ve been given permission to reproduce some spectacular examples here for the purpose of education. In addition to selections from my personal collection, special thanks go to these institutions and individuals who have generously contributed to this assemblage:​
The Chicago Academy of Sciences
David and Sandra Douglass Collection
Milwaukee Public Museum
The Field Museum of Natural History
The Lauer Foundation
​Phil Anderson
Valerie Anderson
Marie Angkuw
​Chris Berg
Joan Bledig
​Rob Coleman
Dr. Charles Comfort
Hannah Cwik
Dan Damrow
Clay Davis
Dave Dolak
Scott Galloway
​Rich Holm
Andy Jansen
Pete Kodat
Bruce Lauer
Lil Magnusson
Charlie Miller
Bob Morton
Dana Pond
Connor Puritz
Ben Riegler
Gary Riegler
​Keith Robitschek
Richard Rock
Maarten Vonhof
Tom Williams
Jack Wittry
Copyright © 2021 Andrew Young. All specimen images on this page and in the fossil galleries may be protected by copyright. They are presented here in ​accordance with fair use principles and are only being used for informational and educational purposes. They may not be republished electronically or in print without the written consent of the individuals and institutions who have lent them here.
Scale Bar = 1 centimeter
​All photographs are by Andrew Young unless otherwise indicated.
Click on images to view galleries
                 Cnidarians
    Sea Jellies, Anemones, Hydroids
                  Polychaete Worms
               Other worm-like animals

Arthropods

                      Horseshoe Crabs
  Scorpions, Eurypterids, Euthycarcinoids
         Spiders and Spider-like Arachnids
                                          Insects, Nymphs, and Wings
             Millipedes, Centipedes, Hexapods

                                                                         Crustaceans

                    Syncarid "Shrimp"
     Marine-estuarine Shrimp and Molts
Cycloids, Branchiopods, Ostracodes,             Barnacles, Flea Shrimp

                                             Mollusks

               Clams and Scallops
     Chitons, Gastropods, and Cephalopods
       Sea Cucumbers, Brachiopods,
​                 and Acorn Worms

Chordates

              Sharks and Jawless Fish
                         Bony Fish
   Tetrapods, Aistopods, and Larval Fish
                                Egg Cases
    Tully Monsters, "Y" and "H" animals
             Scales, Teeth, and Bone

  Trace Fossils

             Coprolites, Burrows, and Trails
           Insect-Plant Interactions:
   Feeding and Ovipositional Scarring
                       Curiosities
                    Header image:  syncarid shrimp, Acanthotelson stimpsoni - Milwaukee Public Museum collection P360793.1