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Science 7 January 1966:
Vol. 151. no. 3706, pp. 75 - 76
DOI: 10.1126/science.151.3706.75-a
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Articles

Wormlike Fossil from the Pennsylvanian of Illinois

Eugene S. Richardson Jr. 1

1 Chicago Natural History Museum, Chicago, Illinois 60605

Tullimonstrum gregarium was a common, possibly marine, invertebrate in certain shallow, offshore waters of northern Illinois during the Middle Pennsylvanian. It had a flexible proboscis armed with teeth; a mobile tail; and a curious transverse bar behind the head, bearing a pair of round, external organs.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Ten-Armed Fossil Cephalopod from the Pennsylvanian of Illinois.
R. G. Johnson, R. G. Johnson, and E. S. Richardson Jr. (1968)
Science 159, 526-528
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Science. ISSN 0036-8075 (print), 1095-9203 (online)