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D. F. Toomey
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Journal Article
A distinctive sponge spicule assemblage from organic buildups in the Lower Ordovician of southern Oklahoma
Publisher: Paleontological Society
Published: 01 March 1978
Journal of Paleontology (1978) 52 (2): 501–506.
Journal Article
A problematical micro-organism from the El Paso Group (Lower Ordovician) of West Texas
Publisher: Paleontological Society
Published: 01 November 1966
Journal of Paleontology (1966) 40 (6): 1304–1311.
