Publications
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1980. Phylogenetic systematics and vicariance biogeography. Systematic Botany. 5:194-220. Abstract
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2002. Phylogenetic relationships of the Hybopsis amblops species group (Teleostei: Cyprinidae). Journal Information. 2002(4)
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1997. Phylogenetic relationships of the Fundulus nottii species group (Fundulidae, Cyprinodontiformes) as inferred from the cytochrome b gene. Copeia. 1997(4):858-862.
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1992. Phylogenetic relationships among members of the Hybopsis dorsalis species group (Teleostei: Cyprinidae). Occasional Papers of the Museum of Natural History University of Kansas. :1-18.
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2004. The phylogenetic position of five genera (Acanthochromis, Azurina, Chrysiptera, Dischistodus, and Neopomacentrus) of damselfishes (Perciformes: Pomacentridae). Molecular Phylogenetics and Evolution. 30:823-828.
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1994. Phylogenetic and Paleogeographic Relationships of the Varasichthyid Group (Teleostei) from the Late Jurassic of Central and South-America. Revista Geologica De Chile. 21(1):119-165. Abstract
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1975. Pholidophorus domeykanus n. sp. del Jurásico de Chile. Andean Geology. (2)
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1985. Peces del Jurasico de Chile y Argentina. Ameghiniana. 21(2-4):205-210.
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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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2006. Paraclupeids of El Espinal Quarry (Mexico) and the interrelationships of ellimmichthyiformes. Journal of Vertebrate Paleontology. 26(3):108a-108a.
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1991. Palatoquadrate and Its Ossifications - Development and Homology within Osteichthyans. Journal of Morphology. 208(1):1-81. Abstract
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1990. An overview of alligator management in Florida. Crocodiles. Proceedings of the 10th Working Meeting of the Crocodile Specialist Group of the Species Survival Commission of IUCN - The World Conservation Union convened at Gainesville, Florida, U.S.A., 23 to 27 April 1990. Volume 2.. :274-285.
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2001. The osteology and relationships of Pipa aspera (Amphibia: Anura: Pipidae), with notes on its natural history in French Guiana. Amphibia-Reptilia. 22:33–54. Abstract
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1975. The Osteo Cranium of Nematogenys-Inermis and Considerations on the Primitiveness of the Genus Pisces Siluriformes Trichomycteridae. Museo Nacional de Historia Natural Publicacion Ocasional (Santiago De Chile). (19):1-7. Abstract
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2008. The Ostariophysan Fossil Record: State of the Art. Journal of Vertebrate Paleontology. 28(3):46a-46a.
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2008. The Ostariophysan Fossil Record of the Indian Subcontinent. Journal of Vertebrate Paleontology. 28(3):124a-124a.
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1987. Orthogonikleithrus-Leichi New-Genus New-Species Pisces Teleostei from the Late Jurassic of West Germany. Palaeontologische Zeitschrift. 61(3-4):309-320. Abstract
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1986. Origin and zoogeography of the fishes of central Mexico. The zoogeography of North American freshwater fishes.. :487-517.
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1965. Opsanus astrifer, a new toadfish from British Honduras. Proc Biol Soc Wash. 78:247-250. Abstract
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2000. Ontogeny of the bizarre: an osteological description of Pipe pipa (Anura: Pipidae), with an account of skeletal development in the species. Journal of Morphology. 243:75–104. Abstract
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2002. On species and speciation with reference to the fishes. Fish and Fisheries. 3:161-170.
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2010. Oldest Known Mylopharyngodon (Teleostei: Cyprinidae) from the Mongolian Plateau and its Biogeographical Implications Based on Ecological Niche Modeling. Journal of Vertebrate Paleontology. 30(2):333-340. Abstract
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1983. Nonequilibrium Thermodynamics and Evolution: A Response to Løvtrup. Systematic Zoology. 32:209-219.