Publications
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1986. Zoogeography of freshwater fishes of the western gulf slope of North America. The zoogeography of North American freshwater fishes.. :413-456.
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1986. Zoogeography of the freshwater fishes of the southeastern United States: Savannah River to Lake Pontchartrain. The zoogeography of North American freshwater fishes.. :213-265.
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1985. Late Jurassic Teleosts Actinopterygii Pisces from Northern Chile and Cuba. Palaeontographica Abteilung A Palaeozoologie-Stratigraphie. 189(1-3):29-61. Abstract
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1985. Peces del Jurasico de Chile y Argentina. Ameghiniana. 21(2-4):205-210.
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1985. Cottus-Hypselurus New-Species of Cottid Fish from the Ozark Uplands Arkansas and Missouri USA. American Midland Naturalist. 114:360-373. Abstract
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1985. Species and speciation in phylogenetic systematics, with examples from the North American fish fauna. Annals of the Missouri Botanical Garden. 72:596-635.
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1985. Theories and Methods in Different Approaches to Phylogenetic Systematics. Cladistics. 1:1-11. Abstract
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1984. New catfishes of the genus Trichomycterus from the high Andes of South America (Pisces, Siluriformes) with remarks on distribution and ecology. Zoologische Jahrbuecher Abteilung fuer Systematik Oekologie und Geographie der Tiere. 111(4):493-520.
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1984. Some osteological features of Varasichthys ariasi Arratia (Pisces, Teleostei) from the Late Jurassic of Chile. Palaeontologische Zeitschrift. 58(1-2):149-163. Abstract
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1984. A critique of Wagner groundplan-divergence studies and a comparison with other methods of phylogenetic analysis. Taxon. 33:212-232.
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1984. Family Lepisosteidae (gars) as living fossils. Living fossils. Springer-Verlag, New York. :160–165.
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1984. A method of preparing disarticulated skeletons of small fishes. Copeia. 1984:230-232.
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1984. The neopterygian Amia as a living fossil. Living fossils.. :153-159.
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1983. The caudal skeleton of ostariophysan fishes (Telostei): intraspecific variation in Trichomycteridae (Siluriformes). Journal of Morphology. 177(2):213-229. Abstract
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1983. Trichomycterus-Chungaraensis New-Species and Trichomycterus-Laucaensis New-Species (Pisces, Siluriformes, Trichomycteridae) from the High Andean Range. Studies on Neotropical Fauna and Environment. 18(2):65-88. Abstract
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1983. Nonequilibrium Thermodynamics and Evolution: A Response to Løvtrup. Systematic Zoology. 32:209-219.
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1982. Peces del altiplano de Chile. El Hombre y los ecosistemas de montaña (Eds. A. Veloso & E. Bustos). :93-133.
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1982. Some comments on niche analysis in canonical space.. Ecology. 63:888-893.
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1982. Victims of history - a nonequilibrium approach to evolution. Systematic Zoology. 31:1-24.
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1981. Analysis of the Morphological and Chromosomal Differentiation of Chilean Pejerreyes (Pisces, Atherinidae). Archivos De Biologia Y Medicina Experimentales. 14(1):57-57.
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1981. Fishes of the Sub-Andean Cuyano Region. Archivos De Biologia Y Medicina Experimentales. 14(3):249-249.
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1981. Revision of the Fresh Water Catfishes of the Genus Hatcheria Siluriformes Trichomycteridae with Commentaries on Ecology and Bio Geography. Zoologischer Anzeiger. 207(1-2):88-111. Abstract
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1981. Remarks on Willis' species concept. Systematic Zoology. 30:86-87.
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1980. Biogeography of Fresh-Water Fishes from Chile. Archivos De Biologia Y Medicina Experimentales. 13(1):44-44.

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