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Journal Article

A New Species of Astraeospongia from the Middle Ordovician of Northern Illinois

R. C. Gutschick
Journal of Paleontology
Vol. 28, No. 4 (Jul., 1954), pp. 430-433
Stable URL: http://www.jstor.org/stable/1300159
Page Count: 4

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Topics: Sponges, Middle Ordovician epoch, Fossils, Quarries, Holotypes
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A New Species of Astraeospongia from the Middle Ordovician of Northern Illinois
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Abstract

Astraeospongia dixonensis n. sp., based upon eleven isolated octactinellid sponge spicules, occurs in Middle Ordovician rocks of Dixon, Illinois. The genus has previously been known in North America only from the Silurian and Devonian.

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