Publications
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1970. Variation in Populations of the Fish Cottus-Carolinae in the Alabama River System with Description of a New Subspecies from Below the Fall Line. American Midland Naturalist. 83:368-381.
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2003. The vascular flora of the Ogallala ecotone on the Dempsey Divide, Roger Mills County, Oklahoma. Sida. 20(3):1215-1243.
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1998. Vascular plants new to Kansas. Sida. 18:593–604.
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1979. Ventral Gill Arch Muscles and the Phylogenetic Relationships of Latimeria-Chalumnae. Occasional Papers California Academy of Sciences. O:56-67. Abstract
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1988. Vicariance biogeography. Annual Review of Ecology and Systematics. 19:513-542.
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1982. Victims of history - a nonequilibrium approach to evolution. Systematic Zoology. 31:1-24.
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1969. Western Atlantic Sponge Dwelling Gobies of the Genus Evermannichthys Their Taxonomy Habits and Relationships. Proceedings of the Academy of Natural Sciences of Philadelphia. 21:1-24.

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