The marine invertebrates called crinoids filled the seas during the Carboniferous period and even earlier. Their fossils are frequently found in limestone from the period, giving the Carboniferous the nickname the "Age of the Crinoids.
Fossil trilobite Dicranurus monstrosus, Devonian period, found in the Moroccan Sahara. Museum of Ancient Life, Utah.
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Bear Gulch Coelacanth Caridosuctor
Helicoprion is a long-lived genus of extinct, eugeneodontid holocephalid fish. Almost all fossil specimens are of spirally arranged clusters of the individuals' teeth, called "tooth whorls." This fossilized jaw shows the spiral dentures.
Fossil Bee, about 35 million years ago / Colorado Florissant Fossil Beds / lived in Oligocere
Fossil of Encrinaster, an extinct echinoderm. This would make a pretty cool tattoo
Fossil Allophylus flexifolia Leaf - Green River Formation
Fossil Allophylus flexifolia Leaf - Green River Formation (Item Green River Formation Plant Fossils for sale. FossilEra your source to quality fossil specimens.