Tully monster fossils

Tully monster fossils

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Credit: US DEPARTMENT OF ENERGY/SCIENCE PHOTO LIBRARY

Caption: Halved fossil of the aquatic vertebrate Tullimonstrum gregarium, known as the Tully monster. This creature, which grew up to 35 centimetres in length, had a shovel-like tail (at right in top fossil) and a trunk-like snout with keratin teeth. It's eyes were at either end of a horizontal bar far back on its head. Fossils, dating to 300 million years ago, have only been found in the Mazon Creek fossil beds of Illinois, USA. X-ray studies of the fossils have shown that T. gregarium was closely related to modern lampreys.

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Keywords: american, animal, aquatic, carnivore, carnivorous, ch, fauna, fossil, fossilised, fossilized, fossils, geology, lamprey, marine, mazon creek fossil beds, nature, of illinois, palaeontology, palaeozoology, paleontology, paleozoology, pennsylvanian geological period, prehistoric, prehistory, preserved, proboscis, rock, snout, tullimonstrum gregarium, tully monster, united states, usa, vertebrate, wildlife, zoological, zoology

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