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Lower vertebrates from an Arikareean (earliest Miocene) fauna near the Toledo Bend Dam, Newton County, Texas

Published online by Cambridge University Press:  20 May 2016

L. Barry Albright*
Affiliation:
Department of Earth Sciences, University of California, Riverside 92521

Abstract

A recently discovered vertebrate fossil-bearing locality in the Fleming Formation of easternmost Texas has revealed a highly diverse fauna that contains a minimum of 44 early Miocene vertebrate taxa. At least 17 different species of lower vertebrates were recovered including five fish, two amphibians, one lizard, two snakes, at least five chelonians, and two crocodilians. A tiny boid that compares favorably with Anilioides nebraskensis is the first record in the Gulf Coastal Plain, and remains of a large aquatic turtle referred to the genus Dermatemys possibly represent its first fossil occurrence. Other rare genera represented include the largemouth bass Micropterus, possibly the snook Centropomus, and the crocodilian Gavialosuchus. In addition, temporal and spatial range extensions are recorded for Micropterus and Alligator olseni. These taxa, along with the mammalian component to be discussed elsewhere, document the rare preservation of a forested subtropical to tropical coastal lowland paleoenvironment and provide evidence to imply that separation into mid-continent and coastal plain paleobiogeographic provinces had not yet occurred.

Type
Research Article
Copyright
Copyright © The Paleontological Society 

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References

Albright, L. B. 1990. A submerged early Miocene site in the Fleming Formation near Toledo Bend Dam, Texas. Journal of Vertebrate Paleontology, Abstracts of Papers, 10:12A.Google Scholar
Albright, L. B. 1991. The vertebrate paleontology, taphonomy, and paleoecology of a new early Miocene site in the Fleming Formation near Toledo Bend Dam, Newton County, Texas, and its importance to Gulf Coastal Plain biostratigraphy. Unpubl. , , Baton Rouge, 319 p.Google Scholar
Anderson, A. E. 1958. Geology of the Coldspring area and clay mineralogy of the Fleming Formation, San Jacinto County, Texas. Unpubl. , , 79 p.Google Scholar
Auffenberg, W. A. 1954. Additional specimens of Gavialosuchus americanus (Sellards) from a new locality in Florida. The Quarterly Journal of the Florida Academy of Sciences, 17:185209.Google Scholar
Auffenberg, W. A. 1958. A new family of Miocene salamanders from the Texas coastal plain. Quarterly Journal of the Florida Academy of Sciences, 21:169176.Google Scholar
Auffenberg, W. A. 1963a. The fossil snakes of Florida. Tulane Studies in Zoology, 10:131216.Google Scholar
Auffenberg, W. A. 1963b. Fossil testudinine turtles of Florida, genera Geochelone and Floridemys . Bulletin of the Florida State Museum, Biological Sciences, 7:5397.Google Scholar
Auffenberg, W. A. 1964. A new fossil tortoise from the Texas Miocene, with remarks on the probable geologic history of tortoises in eastern U.S. Pearce–Sellards Series, Texas Memorial Museum, University of Texas at Austin:210.Google Scholar
Auffenberg, W. A. 1974. Checklist of fossil land tortoises (Testudinidae). Bulletin of the Florida State Museum, Biological Sciences, 18:121251.Google Scholar
Barnes, V. E. 1967. Palestine sheet. The University of Texas at Austin, Bureau of Economic Geology, Geologic Atlas of Texas, scale 1:250,000.Google Scholar
Behrensmeyer, A. K. 1982. Time resolution in fluvial vertebrate assemblages. Paleobiology, 8:211227.Google Scholar
Bell, T. 1928. Characters of the order, families, and genera of the Testudinata. Zoological Journal, London, 3:513516.Google Scholar
Berra, T. M. 1981. An Atlas of Distribution of the Freshwater Fish Families of the World. University of Nebraska Press, Lincoln, 197 p.Google Scholar
Bonaparte, C. L. 1831. Saggio di una destribuzione metodica degli Animali Vertebrati. Giornale Arcadico di Scienze, Rome, 144 p.Google Scholar
Brattstrom, B. H. 1961. Some new fossil tortoises from western North America with remarks on the zoogeography and paleoecology of tortoises. Journal of Paleontology, 35:543560.Google Scholar
Cassell, D. E. 1958. Geology of the Coldspring area and petrology of the Fleming Formation, San Jacinto County, Texas. Unpubl. , , 132 p.Google Scholar
Conant, R. 1975. A Field Guide to Reptiles and Amphibians of Eastern and Central North America. Houghton Mifflin Company, Boston, 429 p.Google Scholar
Cope, E. D. 1873. Second notice of extinct Vertebrata from the Tertiary of the Plains. Palaeontological Bulletin No. 15, 6 p.Google Scholar
Cope, E. D. 1889. Synopsis of the families of Vertebrata. American Naturalist, 23:849877.Google Scholar
Crumly, C. R. 1982. A cladistic analysis of Geochelone using cranial osteology, Journal of Herpetology, 16:215234.Google Scholar
Cuvier, G. L. C. F. D. 1807. Sur les différentes espèces de crocodiles vivans et sur leurs caractèrs distinctifs. Annales du Muséum d'Histoire Naturelle, Paris, 10:866.Google Scholar
Cuvier, G. L. C. F. D. 1817. Le règne animal distribué d'après son organisation, Volume 2. Deterville Libraire, Paris, 532 p.Google Scholar
Cuvier, G. L. C. F. D. 1825. Recherches sur les Ossements Fossiles. 3rd edition, Volume 5, Pt. 2. Dufour and D'Ocagne, Paris, 547 p.Google Scholar
Dice, L. R. 1943. The Biotic Provinces of North America. University of Michigan Press, Ann Arbor, 78 p.Google Scholar
Dorf, E. 1959. Climatic changes of the past and present. Contributions of the Museum of Paleontology, University of Michigan, 13:181210.Google Scholar
Douglass, E. 1901. Fossil Mammalia of the White River beds of Montana. American Philosophical Society, Transactions, 20:237279.Google Scholar
Dumble, E. T. 1915. Problem of the Texas Tertiary sands. Geological Society of America Bulletin, 26:447476.Google Scholar
Dumble, E. T. 1918. The geology of east Texas. Bulletin of the University of Texas, 1869, 388 p.Google Scholar
Eastman, C. R. 1917. Fossil fishes in the collection of the United States National Museum. Proceedings of the United States National Museum, 52:235304.CrossRefGoogle Scholar
Ely, L. M. 1957. Microfauna of the Oakville Formation, LaGrange area, Fayette County, Texas. Unpubl. , , 118 p.Google Scholar
Estes, R. 1963. Early Miocene salamanders and lizards from Florida. Quarterly Journal of the Florida Academy of Sciences, 26:234256.Google Scholar
Estes, R. 1969. The Batrachosauroididae and Scapherpetontidae, late Cretaceous and early Cenozoic salamanders. Copeia, 2:225234.Google Scholar
Estes, R. 1981. Gymnophiona, Caudata, 115 p. In Wellnhofer, P. (ed.), Encyclopedia of Paleoherpetology, Part 2. Gustav Fischer Verlag, Stuttgart.Google Scholar
Estes, R. 1983. Sauria terrestria, Amphisbaenia, 249 p. In Wellnhofer, P. (ed.), Encyclopedia of Paleoherpetology, Part 10A. Gustav Fischer Verlag, Stuttgart.Google Scholar
Estes, R., and Tihen, J. A. 1964. Lower vertebrates from the Valentine Formation of Nebraska. American Midland Naturalist, 72:453472.Google Scholar
Fauvel, A. A. 1879. Alligators in China: their history, description, and identification. “Celestial Empire” Office, Shanghai, 36 p.Google Scholar
Fisk, H. N. 1940. Geology of Avoyelles and Rapides Parishes. Geological Bulletin of the Louisiana Geological Survey, No. 18, 240 p.Google Scholar
Fitzinger, L. J. F. J. 1835. Entwurf einer systematischen Anordunben der Schildkröten nach den Grundsätzen der natürlichen Methode. Annalen der Wiener Museums Naturgeschichte, 1:103128.Google Scholar
Folk, R. L. 1955. Petrographic stratigraphy of the Texas Gulf Coast Tertiary, p. 1518. In Tertiary Fieldtrip (Guidebook). University of Texas Geological Society.Google Scholar
Galloway, W. E., Henry, C. D., and Smith, G. E. 1982. Depositional framework, hydrostratigraphy, and uranium mineralization of the Oakville Sandstone (Miocene), Texas Coastal Plain. Bureau of Economic Geology, University of Texas, Report of Investigations No. 113:151.Google Scholar
Galloway, W. E., Jirik, L. A., Morton, R. A., and Dubar, J. R. 1986. Lower Miocene (Fleming) depositional episode of the Texas Coastal Plain and Continental Shelf: structural framework, facies, and hydrocarbon resources. Bureau of Economic Geology, University of Texas, Report of Investigations No. 150, 44 p.Google Scholar
Galloway, W. E., Murphy, T. D., Belcher, R. C., Johnson, B. D., and Sutton, S. 1977. Catahoula Formation of the Texas Coastal Plain: depositional systems, composition, structural development, ground-water flow history, and uranium distribution. Bureau of Economic Geology, University of Texas, Report of Investigations No. 87:159.Google Scholar
Gauthier, J. A., Kluge, A. G., and Rowe, T. 1988. The early evolution of the Amniota, p. 103156. In Benton, M. J. (ed.), The Phylogeny and Classification of the Tetrapods, Volume 1: Amphibians, Reptiles, and Birds. The Systematics Association Special Volume No. 35A. Oxford University Press, New York.Google Scholar
Gill, T. 1872. Arrangement of the families of fishes, or classes Pisces, Marispobranchii, and Leptocardii. Smithsonian Miscellaneous Collections, 11:149.Google Scholar
Glowacz, M. E., and Horne, J. C. 1971. Depositional environments of the early Miocene as exposed in the Cane River Diversion Canal, Rapides Parish, Louisiana. Transactions of the Gulf Coast Association of Geological Societies, 21:379386.Google Scholar
Gmelin, J. F. 1789. In Linnaeus, C. Systema Naturae per regna tria naturae secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Beer, G. E., Leipzig, ed. 13, 1(3):10381516.Google Scholar
Goin, C. J., and Auffenberg, W. A. 1955. The fossil salamanders of the family Sirenidae. Bulletin of the Museum of Comparative Zoology, 113:497514.Google Scholar
Graham, A. 1964. Origin and evolution of the biota of southeastern North America: evidence from the fossil plant record. Evolution, 18:571585.Google Scholar
Gray, J. E. 1825. A synopsis of the genera of reptiles and amphibians with a description of some new species. Annals of Philosophy, New Series, London, 10:193217.Google Scholar
Gray, J. E. 1847. Description of a new genus of Emydidae. Proceedings of the Zoological Society of London, 1847:5556.Google Scholar
Gray, J. E. 1870. Supplement to the catalogue of shield reptiles in the collection of the British Museum. Part 1. Testudinata. Taylor and Francis, London, 120 p.Google Scholar
Gray, J. E. 1873. Observations on chelonians, with descriptions of new genera and species. Annals and Magazine of Natural History, London, 11:289308.Google Scholar
Greenwood, D. H. 1976. A review of the family Centropomidae (Pisces, Perciformes). Bulletin of the British Museum of Natural History (Zoology), 29:181.Google Scholar
Gunter, A. C. 1880. An Introduction to the Study of Fishes. Edinburgh, 720 p.Google Scholar
Hay, O. P. 1907. Descriptions of new species of turtles of the genus Testudo, collected from the Miocene by the Carnegie Museum; together with a description of the skull of Stylemys nebrascensis . Annals of the Carnegie Museum (1906), 4:1520.Google Scholar
Hay, O. P. 1924. Description of some fossil vertebrates from the upper Miocene of Texas. Proceedings of the Biological Society of Washington, 37, 20 p.Google Scholar
Hesse, C. J. 1943. A preliminary report on the Miocene vertebrate faunas of southeast Texas. Proceedings and Transactions of the Texas Academy of Science, 26:157179.Google Scholar
Holman, J. A. 1976a. A new Peltosaurus (Reptilia, Sauria, Anguidae) from the Upper Miocene of Nebraska. Journal of Herpetology, 10:4144.Google Scholar
Holman, J. A. 1976b. Snakes of the Gering Formation (Lower Miocene) of Nebraska. Herpetologica, 32:8894.Google Scholar
Holman, J. A. 1977a. Amphibians and reptiles from the Gulf Coast Miocene of Texas. Herpetologica, 33:391403.Google Scholar
Holman, J. A. 1977b. Snakes of the Monroe Creek Formation (lower Miocene: Arikareean) of Wyoming. Copeia, 1:193194.Google Scholar
Holman, J. A. 1979. A review of North American Tertiary snakes. Publications of the Museum, Michigan State University, Paleontological Series, 1:203260.Google Scholar
Holman, J. A. 1981. A herpetofauna from an eastern extension of the Harrison Formation (early Miocene: Arikareean), Cherry County, Nebraska. Journal of Vertebrate Paleontology, 1:4956.Google Scholar
Hutchison, J. H. 1982. Turtle, crocodilian, and champsosaur diversity changes in the Cenozoic of the north-central region of western United States. Palaeogeography, Palaeoclimatology, Palaeoecology, 37:149164.Google Scholar
Huxley, T. H. 1880. On the applications of the laws of evolution to the arrangement of the Vertebrata and more particularly of the Mammalia. Proceedings of the Zoological Society of London, 1880:649662.Google Scholar
Jordan, D. S., Everman, B. W., and Clark, H. W. 1930. Checklist of the fishes and fish-like vertebrates of North and Middle America north of the northern boundary of Venezuela and Columbia. Report of U.S. Commercial Fisheries, 1928, Part 2:1670.Google Scholar
Lacépède, B. G. E. 1803. Historie naturelle des poissons, Volume 4. Plassan, Paris, 728 p.Google Scholar
Laurent, J. N. 1768. Specimen medicum exhibens synopsin reptilium emendatem cum experimentis circa venena et antidota reptilium Austriazcorm. A. Asher, Amsterdam, 214 p. [1966 reprint of original].Google Scholar
Linnaeus, C. 1758. Systema naturae per regna tria naturae, secundum classes, ordines, genera, species cum characeribus, differentiis, synonymis, locis. Editio decima, reformata. Laurentii Salvii, Stockholm, 1, 824 p.Google Scholar
Loomis, F. B. 1904. Two new river reptiles from the Titanothere beds. American Journal of Science, 18:427432.Google Scholar
Lundberg, J. G. 1975. The fossil catfishes of North America. Papers on Paleontology, Museum of Paleontology, University of Michigan, 11, 51 p.Google Scholar
MacFadden, B. J., and Webb, S. D. 1982. The succession of Miocene (Arikareean through Hemphillian) terrestrial mammalian localities and faunas in Florida, p. 186199. In Scott, T. M. and Upchurch, S. B. (eds.), Miocene of the Southeastern United States. Florida Department of Natural Resources, Bureau of Geology, Special Publications No. 25.Google Scholar
Malone, B. 1979. The systematics, phylogeny and paleobiology of the genus Alligator . Unpubl. Ph.D. dissertation, The City University of New York, New York, 159 p.Google Scholar
Manning, E. 1990. The late early Miocene Sabine River. Transactions of the Gulf Coast Association of Geological Societies, 40:531549.Google Scholar
Marsh, O. C. 1890. Notice of some extinct Testudinata. American Journal of Science, Third Series, 40:177180.Google Scholar
Marshall, A. R. 1958. A survey of the snook fishery of Florida, with studies of the biology of the principal species, Centropomus undecimalis (Bloch). State of Florida, State Board of Conservation, Technical Series No. 22:131.Google Scholar
Martin, J. E. 1984. A crocodilian from the Miocene (Hemingfordian) Sheep Creek Formation in northwestern Nebraska. Proceedings of the South Dakota Academy of Science, 63:4855.Google Scholar
Matthew, W. D. 1924. Third contribution to the Snake Creek fauna. Bulletin of the American Museum of Natural History, 50:59210.Google Scholar
Mertens, R., and Wermuth, H. 1955. Die rezenten Schildkröten, Krokodile und Brükenechsen. Zoologische Jahrbücher, Abteilung Systematik, 83:323440.Google Scholar
Meszoely, C. A. M. 1970. North American fossil anguid lizards. Bulletin of the Museum of Comparative Zoology, 139:87150.Google Scholar
Meylan, P. A. 1987. The phylogenetic relationships of soft shelled turtles (family Trionychidae). Bulletin of the American Museum of Natural History, 186, 101 p.Google Scholar
Mook, C. C. 1921. Skull characters and affinities of the extinct Florida gavial, Gavialosuchus americanus (Sellards). Bulletin of the American Museum of Natural History, 44:3946.Google Scholar
Morgan, G. S. 1986. The so-called giant Miocene dolphin Megalodelphis magnidens Kellogg (Mammalia: Cetacea) is actually a crocodile (Reptilia: Crocodilia). Journal of Paleontology, 60:411417.Google Scholar
Nolf, D. 1985. Otolithi piscium, 145 p. In Schultze, H.-P. (ed.), Encyclopedia of Paleoichthyology. Gustav Fischer Verlag, Stuttgart.Google Scholar
Nopcsa, F. 1928. Palaeontological notes on reptiles. VII. On the classification of the Crocodilia. Geologica Hungarica, Series palaeontologica, 1:7584.Google Scholar
Oppel, M. 1811. Die Ordnung, Familien und Gattungen der Reptilien, als Prodrom einer Natureschichte derselben. Lindauer, Munich, 87 p.Google Scholar
Patton, T. H. 1969. Miocene and Pliocene artiodactyls, Texas Gulf Coastal Plain. Bulletin of the Florida State Museum, 14:115226.Google Scholar
Patton, T. H., and Taylor, B. E. 1973. The Protoceratinae (Mammalia, Tylopoda, Protoceratidae) and the systematics of the Protoceratidae. American Museum of Natural History, Bulletin, 150:347414.Google Scholar
Patton, T. H., and Webb, S. D. 1970. Fossil vertebrate deposits in Florida. The Plaster Jacket, Florida State Museum, 14:119.Google Scholar
Plummer, F. B. 1932. Cenozoic systems in Texas, p. 519818. In Sellards, E. H., Adkins, W. S., and Plummer, F. B., The Geology of Texas, Volume 1. Bulletin of the University of Texas, No. 3232.Google Scholar
PoEY, F. 1868. Repertorio Fisico-Natural de la isla de Cuba, 2. Gobierno and Capitañia, Havana, 280 p.Google Scholar
Pratt, A. E. 1986. The taphonomy and paleoecology of the Thomas Farm Local Fauna (Miocene, Hemingfordian), Gilchrist County, Florida. Unpubl. Ph.D. dissertation, University of Florida, Gainesville, 486 p.Google Scholar
Quinn, J. H. 1955. Miocene Equidae of the Texas Gulf Coastal Plain. University of Texas, Bureau of Economic Geology Publications, 5516:190.Google Scholar
Rafinesque, C. S. 1820. Ichthyologia Ohiensis, or natural history of the fishes inhabiting the river Ohio and its tributary streams, preceded by a physical description of the Ohio and its branches. W. E. Hunt, Lexington, Kentucky, 90 p.Google Scholar
Rage, J. C. 1984. Serpentes, 80 p. In Wellnhofer, P. (ed.), Encyclopedia of Paleoherpetology, Part 11. Gustav Fischer Verlag, Stuttgart.Google Scholar
Ragsdale, J. A. 1960. Petrology of Miocene Oakville Formation, Texas Coastal Plain. Unpubl. , , 196 p.Google Scholar
Renick, B. C. 1936. The Jackson Group and the Catahoula and Oakville Formations in a part of the Texas Gulf Coastal Plain. The University of Texas Bulletin, No. 3619:1104.Google Scholar
Retallack, G. 1984. Completeness of the rock and fossil record: some estimates using fossil soils. Paleobiology, 10:5978.Google Scholar
Rivas, L. R. 1962. The Florida fishes of the genus Centropomus, commonly known as snook. Quarterly Journal of the Florida Academy of Science, 25:5364.Google Scholar
Roberts, D. C. 1962. A study of Echmatemys callopyge from the Uinta Eocene of Utah, and its redefinition as a subspecies of E. septaria . Bulletin of the Museum of Comparative Zoology, 127:375400.Google Scholar
Rogers, J. E., and Calandro, A. J. 1965. Water resources of Vernon Parish, Louisiana. State of Louisiana Department of Conservation Geological Survey and Department of Public Works Water Resources, Bulletin No. 6, 104 p.Google Scholar
Schmidt, K. P. 1941. A new fossil alligator from Nebraska. Geological Series of the Field Museum of Natural History, 8:2732.Google Scholar
Schoch, R. M. 1984. The type specimens of Tapirus validus and ?Tapirus rarus (Mammalia, Perissodactyla), with a review of the genus, and a new report of Miotapirus (Miotapirus marslandensis Schoch and Prins new species) from Nebraska. Postilla, 195:111.Google Scholar
Schultz, C. B., Martin, L. D., and Corner, R. G. 1975. Middle and late Cenozoic tapirs from Nebraska. Bulletin of the University of Nebraska State Museum, 10:121.Google Scholar
Sellards, E. H. 1915. A new gavial from the late Tertiary of Florida. The American Journal of Science, 40:135138.Google Scholar
Shipp, R. L. 1988. Dr. Bob Shipp's guide to fishes of the Gulf of Mexico. Dauphin Island Sea Laboratory, Dauphin Island, Alabama, 256 p.Google Scholar
Shumard, B. J. 1863. On the discovery of dicotyledonous leaves in Cretaceous strata, and the existence of an extensive Miocene formation, equivalent to the bone beds of the Mauvaises Terres of Nebraska. St. Louis Academy of Science Transactions, 2:140141.Google Scholar
Smith, C. L. 1961. An ictalurid catfish, Ictalurus decorus (Hay), from the Miocene of South Dakota. Journal of Paleontology, 35:923926.Google Scholar
Smith, H. M., and Smith, R. B. 1979. Synopsis of the herpetofauna of Mexico. Volume 6. Guide to Mexican turtles, bibliographic addendum 3. John Johnson Publishers, North Bennington, Vermont, 1,044 p.Google Scholar
Snead, J. I., and McCulloh, R. P. (compilers). 1984. Geologic Map of Louisiana, 1984. Louisiana Geological Survey, Baton Rouge, scale 1:500,000.Google Scholar
Spradlin, S. D. 1980. Miocene fluvial systems: southeast Texas. Unpubl. , at Austin, 139 p.Google Scholar
Steel, R. 1973. Crocodylia, 116 p. In Wellnhofer, P. (ed.), Encyclopedia of Paleoherpetology, Part 16. Gustav Fischer Verlag, Stuttgart.Google Scholar
Stenzel, H. B., Turner, F. E., and Hesse, C. J. 1944. Brackish and nonmarine Miocene in southeastern Texas. Bulletin of the American Association of Petroleum Geologists, 28:9771011.Google Scholar
Stinton, F. C. 1978. Fish otoliths from the English Eocene. Palaeontographical Society Monographs, 132:127189.Google Scholar
Sullivan, R. 1979. Revision of the Paleogene genus Glyptosaurus (Reptilia, Anguidae). Bulletin of the American Museum of Natural History, 163:172.Google Scholar
Taylor, E., and Hesse, C. 1943. A new salamander from the upper Miocene beds of San Jacinto County, Texas. American Journal of Science, 241:185193.Google Scholar
Toula, F., and Kail, J. A. 1885. Uber einen Krokodil-Schädel aus den Tertiärablagerungen von Eggenburg in Niederösterreich. Denkschriften der Akademie der Wissenschaften Vienna, L:299356.Google Scholar
Vanzolini, P. E. 1952. Fossil snakes and lizards from the lower Miocene of Florida. Journal of Paleontology, 26:452457.Google Scholar
Voorhies, M. R. 1990. Vertebrate paleontology of the proposed Norder Reservoir area, Brown, Cherry, and Keya Paha Counties, Nebraska. Technical Report 82-09, Division of Archaeological Research, University of Nebraska, Lincoln, 138 p.Google Scholar
Webb, S. D., MacFadden, B. J., and Baskin, J. A. 1981. Geology and paleontology of the Love Bone Bed from the late Miocene of Florida. American Journal of Science, 281:513544.Google Scholar
Weeks, A. W. 1945. Balcones, Luling, and Mexia fault zones in Texas. Bulletin of the American Association of Petroleum Geologists, 29:17331737.Google Scholar
Welch, R. N. 1942. Geology of Vernon Parish. State of Louisiana Department of Conservation Geological Bulletin 22, 90 p.Google Scholar
White, T. E. 1942. A new alligator from the Miocene of Florida. Copeia, 1942:37.Google Scholar
Wiley, E. O. 1976. The phylogeny and biogeography of fossil and recent gars (Actinopterygii: Lepisosteidae). Miscellaneous Publications, University of Kansas Museum of Natural History, 64:1111.Google Scholar
Williams, E. 1953. A new fossil tortoise from the Thomas Farm Miocene of Florida. Bulletin of the Museum of Comparative Zoology, 107:534554.Google Scholar
Wilson, J. A. 1956. Miocene formations and vertebrate biostratigraphic units, Texas Coastal Plain. Bulletin of the American Association of Petroleum Geologists, 40:22332246.Google Scholar
Wilson, J. A. 1957. Early Miocene entelodonts, Texas Coastal Plain. American Journal of Science, 255:641649.Google Scholar
Wilson, J. A. 1959. Stratigraphic concepts in vertebrate paleontology. American Journal of Science, 257:770778.Google Scholar
Wilson, J. A. 1960. Miocene carnivores, Texas Coastal Plain. Journal of Paleontology, 34:9831000.Google Scholar
Wilson, J. A. 1962. Field trip no. 10, Tertiary formations between Austin and Houston, with special emphasis on the Miocene and Pliocene, p. 342354. In Geology of the Gulf Coast and Central Texas and a Guidebook of Excursions. Houston Geological Society.Google Scholar
Woodburne, M. O. 1987. Cenozoic Mammals of North America, Geochronology and Biostratigraphy. University of California Press, Berkeley, 336 p.Google Scholar