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B

Braddy, S. J., 1998, An Overview of the Invertebrate Ichnotaxa From the Robeldo Mountains Ichnofauna (Lower Permian), Southern New Mexico: In: Permian Stratigraphy and Paleontology of the Robledo Mountains, New Mexico, edited by Lucas, S. G., Estep, J. W., and Hoffer, J. M., New Mexico Museum of Natural History and Sciences, Bulletin n. 12, p. 93-98.

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C

Caselli, A. T., and Arcucci, A. B., 1999, Huellas de tetrapodos en eolianitas de la Formacion Patquia (Permico), La Rioja, Argentina: Ameghiniana, v. 36, n. 4, Supplemento 1999-RESUMENES, p. 30R.

Cassinis, G., and Santi, G., 2005, Permian tetrapod footprint assemblages from southern Europe and their stratigraphic implications: In: The Nonmarine Permian; edited by Lucas, S. G., and Zeigler, K. E., New Mexico Museum of Natural History & Science, Bulletin 30, p. 26-38.

Conti, M. A., Leonardi, G., Mietto, P., and Nicosia, U., 2000, Orme di tetrapodi non dinosauriani del Paleozoico e Mesozoico in Italia: In: Dinosauri in Italia, Le orme giurassiche dei Lavini di Marco (Trentino) e gli altri resti fossili italani, editye by Avancini, M., and Conti, M. A,. Accademia Editoriale, p. 297-320.

Cotton, W. D., Hunt, A. P., and Cotton, J. E., 1995, Paleozoic Vertebrate Tracksites in Eastern North America: In: Early Permian footprints and facies, New Mexico Museum of Natural History and Science Bulletin, n. 6, editors Lucas, S. G., and Heckert, A. B., p. 189-211.

E

Ellenberger, P., 1983, Sur la Zonation ichnologique du Permien moyen (Saxonien) du bassin de Lodeve (Herault): Compte rendu hebdomadaire des seances de l’Academie des Sciences Paris, tomo 297, seire 2, p. 553-558.

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Ellenberger, P., 1984, Donnees complementaires sur la zonation ichnologique du Permien du Mid de la France (bassins de Lodeve, Saint-Affrique et Rodez): Compte rendu hebdomadaire des seances de l’Academie des Sciences Paris, tomo 299, serie 2, n. 9, p. 581-586.

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G

Gilmore, C. W., 1926, Fossil footprints from the Grand Canyon: Smithsonian Misceallneous Colletion, v. 77, n. 9, 41pp.

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H

Haubold, H., 1971, Ichnia Amphibiorum et Reptiliorum fossilium: Handbuch der Palaoherpetologie, Teil 18, p. 1-124.

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Haubold, H., and Lucas, S. G., 1999, The Lower Permian Tetrapod track fauna of New Mexico: stratigraphic equivalent of comparable euramerican red-bed Tracks: Journal of Vertebrate Paleontology, v. 19, supplement to n. 3, Abstracts of Papers, Fifty-ninth Annual Meeting, Society of Vertebrate Palaeontology, Adams Mark Hotel, Denver, Colorado, October 20-23, p. 49A-50A.

Haubold, H., and Lucas, S. G., 2003, Tetrapod footprints of the Lower Permian Choza Formation of Castle Peak, Texas: Paläontologische Zeitschrift, v. 77, n. 2, p. 247-261.

Haubold, H., and Sarjeant, W. A. S., 1973, Tetrapodenfahrten aus den Keele und Enville Groups (Permokarbon: Stefan und Autun) von Shropshire und South Staffordshire, Grosbritannien: Z. geol. Wiss, Berlin 1, n. 8, p. 895-933.

Hunt, A. P., and Lucas, S. G., 1998, Implications of the Cosmopolitanism of Permian Tetrapod Ichnofaunas: In: Permian Stratigraphy and Paleontology of the Robledo Mountains, New Mexico, edited by Lucas, S. G., Estep, J. W., and Hoffer, J. M., New Mexico Museum of Natural History and Sciences, Bulletin n. 12, p. 55-57.

Hunt, A. P., and Lucas, S. G., 1998, Ichnological Evidence For Teterapod Predation in The Paleozoic: Is There Any?: In: Permian Stratigraphy and Paleontology of the Robledo Mountains, New Mexico, edited by Lucas, S. G., Estep, J. W., and Hoffer, J. M., New Mexico Museum of Natural History and Sciences, Bulletin n. 12, p. 59-62.

Hunt, A. P., and Lucas, S. G., 1998, Vertebrate Ichnofaunas of New Mexico and Their Bearing on Early Permian Tetrapod Ichnofacies: In: Permian Stratigraphy and Paleontology of the Robledo Mountains, New Mexico, edited by Lucas, S. G., Estep, J. W., and Hoffer, J. M., New Mexico Museum of Natural History and Sciences, Bulletin n. 12, p. 63-65.

Hunt, A. P., and Lucas, S. G., 1998, Vertebrate Tracks and the Myth of the Belly-Dragging, Tail-Dragging Tetrapods of the Late Paleozoic: In: Permian Stratigraphy and Paleontology of the Robledo Mountains, New Mexico, edited by Lucas, S. G., Estep, J. W., and Hoffer, J. M., New Mexico Museum of Natural History and Sciences, Bulletin n. 12, p. 67-69.

Hunt, A. P., and Lucas, S. G., 2005, The significance of Permian tracks to the development of a tetrapod ichnology: In: The Nonmarine Permian; edited by Lucas, S. G., and Zeigler, K. E., New Mexico Museum of Natural History & Science, Bulletin 30, p. 127.

Hunt, A. P, and Lucas, S. G., 2005, Nonmarine Permian tracks faunas from Arizona, USA: IChnotaxonomy and Ichnofacies: In: The Nonmarine Permian; edited by Lucas, S. G., and Zeigler, K. E., New Mexico Museum of Natural History & Science, Bulletin 30, p. 128-131.

Hunt, A. P., Lucas, S. G., Cotton, W., Cotton, J., and Lockley, M. G., 1995, Early Permian Vertebrate Tracks From the Abo Formation, Socorro County, Central New Mexico: A Preliminary Report: In: Early Permian footprints and facies, New Mexico Museum of Natural History and Science Bulletin, n. 6, editors Lucas, S. G., and Heckert, A. B., p. 263-268.

Hunt, A. P., Lucas, S. G., Haubold, H., and Lockley, M. G., 1995, Early Permian (Late Wolfcampian) Tetrapod Tracks from the Robledo Mountains, South-Central New Mexico: In: Early Permian footprints and facies, New Mexico Museum of Natural History and Science Bulletin, n. 6, editors Lucas, S. G., and Heckert, A. B., p. 167-180.

Hunt, A. P., Lucas, S. G., and Lockley, M. G., 1997, On trackways from the Early Permian of New Mexico: New Mexico Geology, v. 19, n. 2, p. 54.

Hunt, A. P., Lucas, S. G., Lockley, M. G., Haubold, H., and Braddy, S., 1995, Tetrapod Ichnofacies in Early Permian Red Beds of the American Southwest: In: Early Permian footprints and facies, New Mexico Museum of Natural History and Science Bulletin, n. 6, editors Lucas, S. G., and Heckert, A. B., p. 295-301.

Hunt, A. P., Lucas, S. G., and Lockely, M. C., 1995, Paleozoic Tracksites of the Western United States: In: Early Permian footprints and facies, New Mexico Museum of Natural History and Science Bulletin, n. 6, editors Lucas, S. G., and Heckert, A. B., p. 213-217.

Hunt, A. P., Lucas, S. G., Santucci, V. L., and Elliott, D. K., 2005, Permian vertebrates of Arizona: In: Vertebrate Paleontology in Arizona, edited by Heckert, A. B., and Lucas, S. G., New Mexico Museum of Natural History & Sciene, Bulletin 29, p. 10-15.

Hunt, A. P., Lucas, S. G., and Spielmann, J. A., 2005, Early Permian tetrapod tracksites in New Mexico: In: The Permian of Central New Mexico, edited by Lucas, S. G., Zeigler, K. E., and Spielmann, J. A., New Mexico Museum of Natural History & Science, Bulletin 31, p. 46-48.

Hunt, A. P., Lucas, S. G., and Spielmann, J. A., 2005, Paleoenvironmental transcts and tetrapod biotaxononichnofacies in the Early Permian of the southwestern United States: In: The Permian of Central New Mexico, edited by Lucas, S. G., Zeigler, K. E., and Spielmann, J. A., New Mexico Museum of Natural History & Science, Bulletin 31, p. 49-51.

Hunt, A. P., Lucas, S. G., and Spielmann, J. A., 2005, Early Permian tetrapod ethoichnofacies in New Mexico: In: The Permian of Central New Mexico, edited by Lucas, S. G., Zeigler, K. E., and Spielmann, J. A., New Mexico Museum of Natural History & Science, Bulletin 31, p. 52-55.

Hunt, A. P., Lucas, S. G., and Spielmann, J. A., 2005, The Permian tetrapod ichnogenus Ichniotherium cottae from central New Mexico: In: The Permian of Central New Mexico, edited by Lucas, S. G., Zeigler, K. E., and Spielmann, J. A., New Mexico Museum of Natural History & Science, Bulletin 31, p. 56-58.

Hunt, A. P., and Santucci, V. L., 2002, Reassessment of Late Paleozoic tetrapod tracks from Grand Canyon National Park, Arizona: Journal of Vertebrate Paleontology, v. 22, supplement to n. 3, Abstracts of Papers, Sixty-second annual Meeting of the Society of Vertebrate Paleontology, Sam Noble Oklahoma Museum of Natural History, University of Oklahoma, Norman Oklahoma, October 9-12, p. 68a.

Hunt, A. P., Santucci, V. L., and Lucas, S. G., 2005, Vertebrate trace fossils from Arizona with special reference to tracks preserved in National Park Service unites and notes on the Phanerozoic distribution of fossil footprints: In: Vertebrate Paleontology in Arizona, edited by Heckert, A. B., and Lucas, S. G., New Mexico Museum of Natural History & Sciene, Bulletin 29, p. 159-167.

K

Knoll, F., 2005, The tetrapod fauna of the Upper Elliot and Clarens formations in the main Karoo Basin (South Africa and Lesotho): Bulletin de la societie geologiques de France, t. 176, n. 1, p. 81-91.

Kramer, J. M., Erickson, B. R., Lockley, M. G., Hunt, A. P., and Braddy, S. J., 1995, Pelycosaur predation in the Permian: evidence from Laoporus trackways from the Coconion Sandstone with description of a new species of Permichnium: In: Early Permian footprints and facies, New Mexico Museum of Natural History and Science Bulletin, n. 6, editors Lucas, S. G., and Heckert, A. B., p. 245-249.

L

Lerner, A. L., Johnson, S. C., and Lucas, S. G., 2000, Early Permian tetrapod ichnofauna at Abo Pass, Central New Mexico: New Mexico Geology, v. 22, n. 2, p. 45.

Lerner, A., Lucas, S. G., Hunt, A. P., and Munter, N., 2004, Lower Permian tetrapod ichnofauna from the Abo Formation, Fra Cristoral Mountains, Sierra County, New Mexico: In: Journal of Vertebrate Paleontology, v. 24, supplement to n. 3, abstracts of Papers, Sixty-fourth Annual Meeting, Society of Vertebrate Paleontology, Adams Mark Hotel, Denver, Colorado, November 3-6, 2004, p. 82a.

Lockley, M. G., Hunt, A. P., Haubold, H., and Lucas, S. G., 1995, Fossil Footprints in the DeChelly Sandstone of Arizona: With Paleoecological Observations of the Ichnology of Dune Facies: In: Early Permian footprints and facies, New Mexico Museum of Natural History and Science Bulletin, n. 6, editors Lucas, S. G., and Heckert, A. B., p. 225-233.

Lucas, S. G., 1998, Toward a Tetrapod Biochronology of the Permian: In: Permian Stratigraphy and Paleontology of the Robledo Mountains, New Mexico, edited by Lucas, S. G., Estep, J. W., and Hoffer, J. M., New Mexico Museum of Natural History and Sciences, Bulletin 12, p. 71-91.

Lucas, S. G., 2007, Tetrapod footprint biostratigraphy and biochronology: Ichnos, v. 14, p. 4-38.

Lucas, S. G., Estep, J. W., and Hunt, A. P., 1998, Road Log to Early Perman Tracksites in the Robledo Mountains, Dona Ana County, New Mexico: In: Permian Stratigraphy and Paleontology of the Robledo Mountains, New Mexico, Lucas, S. G., Estep, J. W., and Hoffer, J. M., New Mexico Museum of Natural History and Sciences, Bulletin 12, p. 1-7.

Lucas, S. G., Heckert, A. B., Estep, J. W., Hunt, A. P., and Anderson, O. J., 1998, Stratigraphy, Paleontology and Depositional Environments of the Lower Permian Robledo Mountains Formation of the Hueco Group, Robledo Mountains, New Mexico: In: Permian Stratigraphy and Paleontology of the Robledo Mountains, New Mexico, Lucas, S. G., Estep, J. W., and Hoffer, J. M., New Mexico Museum of Natural History and Sciences, Bulletin 12, p. 29-41.

Lucas, S. G., and Hunt, A. P., 2005, Permian tetrapod tracks from Texas: In: The Nonmarine Permian; edited by Lucas, S. G., and Zeigler, K. E., New Mexico Museum of Natural History & Science, Bulletin 30, p. 202-206.

Lucas, S. G., Hunt, A. P., and Heckert, A. B., 1995, Preliminary Report on Paleontology of the Abo Formation, McLeod Hills, Sierra County, New Mexico: In: Early Permian footprints and facies, New Mexico Museum of Natural History and Science Bulletin, n. 6, editors Lucas, S. G., and Heckert, A. B., p. 279-285.

Lucas, S. G., Hunt, A. P., Heckert, A. B., and Haubold, H., 1995, Vertebrate Paleontology of the Robledo Mountains Member of the Hueco Formation, Dona Ana Mountains, New Mexico: In: Early Permian footprints and facies, New Mexico Museum of Natural History and Science Bulletin, n. 6, editors Lucas, S. G., and Heckert, A. B., p. 269-277.

Lucas, S. G., Lerner, A. J., and Haubold, H., 2001, First record of Amphisauropus and Varanopus in the Lower Permian Abo Formation, central New Mexico: Hallesches Jahrb. Geowiss, B 23, p. 69-78.

Lucas, S. G., Lerner, A. J., and Hunt, A. P., 2004, Permian tetrapod footprnts from the Lucero Uplift, Central New Mexico, and Permian footprint Biostratigraphy: In: Carboniferous-Permian transition at Carrizo Arroyo, Central New Mexico, edited by Lucas, S. G., and Zeigler, K. E., New Mexico Museum of Natural History & Science, bulletin, 25, p. 291-300.

Lucas, S. G., Lerner, A. J., Nelson, J,. Hunt, A. P., and Dimichele, W. A., 2003, Early Permian (Leonardian) tetrapod footprints from Lake Kemp, north central Texas: The Geological Society of America Annual Meeting and Exposition, Washington Sate Convention & Trade Center, November, 2-5, v. 34, n. 7, p. 499.

Lucas, S. G., Lozovsky, V. R., and Shishkin, M. A., 1999, Tetrapod Footprints from Early Permian Redbeds from the Northern Caucasus, Russia: Ichnos, v. 6, n. 4, p. 277-281.

Lucas, S. G., Minter, N. J., Spielmann, J. A., Hunt, A. P., and Braddy, S. J., 2005, Early Permian ichnofossil assemblage from the Fra Cristobal Mountains, southern New Mexico: In: The Permian of Central New Mexico, edited by Lucas, S. G., Zeigler, K. E., and Spielmann, J. A., New Mexico Museum of Natural History & Science, Bulletin 31, p. 140-150.

Lucas, S. G., Minter, J. J., Spielmann, J. A., Smith, J. A., and Braddy, S. J., 2005, Early Permian ichnofossils from the northern Caballo Mountains, Sierra County, New Mexico: In: The Permian of Central New Mexico, edited by Lucas, S. G., Zeigler, K. E., and Spielmann, J. A., New Mexico Museum of Natural History & Science, Bulletin 31, p. 151-162.

Lucas, S. G., Smith, J. A., and Hunt, A. P., 2006, Tetrapod tracks from the Lower Permian Yeso Group, central New Mexico: In: The Permian of Central New Mexico, edited by Lucas, S. G., Zeigler, K. E., and Spielmann, J. A., New Mexico Museum of Natural History & Science, Bulletin 31, p. 121-124.

M

McKeever, P. J., 1991, Trackway preservation in eolian sandstones from the Permian of Scotland: Geology, v. 19, p. 726-729.

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Minter, N. J., 2005, The Robledo Mountains ichnofauna: regional and global context: In: The Nonmarine Permian; edited by Lucas, S. G., and Zeigler, K. E., New Mexico Museum of Natural History & Science, Bulletin 30, p. 217.

Morales, M., and Haubold, H., 1995, Tetrapod Tracks From the Lower Permian DeChelly Sandstone of Arizona: Systematic Description: In: Early Permian footprints and facies, New Mexico Museum of Natural History and Science Bulletin, n. 6, editors Lucas, S. G., and Heckert, A. B., p. 251-261.

Mujal, E., Marchetti, L., Schoch, R. R., and Fortuny, J., 2020, Upper Paleozoic to Lower Mesozoic tetrapod ichnology revisited: photogrammetry and relative depth pattern inferences on funcitonal prevalence of autopodia: Frontiers in Earth Sciences, Original Research, 23pp.

N

Nicosia, U., Ronchi, A,. and Santi, G. 2000, Permian tetrapod footprints from W Orobic Basin (Northern Italy). Biochronological and evolutionary remarks: Geobios, v. 33, n. 6, p. 753-768.

P

Paolo, M., and Umberto, M., 1987, Tetrapod footprints from Collio Formation: Memorie di Scienze Geologiche, v. 49, p. 213-233.

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R

Romer, A. S., and Price, L. I., 1940, Review of the Pelycosauria: Geological Society of America Special Papers n. 28, p. 1-538.

S

Santucci, V. L., and Hunt, A. P., 1998, Biostratigraphy and Paleoecology of Late Paleozoic tetrapod tracks from Grand Canyon National Park, Arizona: Journal of Vertebrate Paleontology, v. 18, supplement to n. 3, Abstracts of papers. Fifty-eighth annual meeting, Society of Vertebrate Paleontology, Snowbird Ski and Summer Resort, Snowbird, Utah, September 30-October 3, 1998, p. 75a.

Sarjeant, W. A. S., 2000, The first Permian vertebrate footprints from the English Midlands: a tale of discovery and rediscovery: In: 2000 International Dinosaur Symposium for Kosong County in Korea, edited by Lee, Y.-N., Proceedings of the International Dinosaur Symposium, The Paleontological Society of Korea, special publication n. 4, p. 39-48.

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Schult, M. F., 1995, Comparisons Between the Las Cruces Ichnofauna and Other Permian Ichnofaunas, Including Infrerred Trackmakers: In: Early Permian footprints and facies, New Mexico Museum of Natural History and Science Bulletin, n. 6, Editors Lucas, S. G., and Heckert, A. B., p. 27-123.

Small, B., and Sanders, F., 2003, Early Permian tetrapod ichnofauna from the Maroon Formaiton, Colorado: age, paleoecological, and biostratigraphic significance: Journal of Vertebrate Paleontology, v. 23, supplement to n. 3, abstracts of papers, sixty-third annual meeting, Society of Vertebrate Paleontology, Science museum of Minnesota, St. Paul, Minnesota, October 15-18, p. 98a.

Smith, J., Lucas, S. G., Hunt, A. B, and Schneider, J., 2005, First report of tetrapod tracks from the Meseta Blanca Member of the Lower Permian Yeso Formation, Central New Mexico: Journal of Vertebrate Paleontology, v. 25, supplement to n. 3, abstracts of papers, sixty-fifth annual meeting, Society of Vertebrate Paleontology, Mesa Southwest Museum and Phoenix Marriott Mesa, Mesa, Arizona, October 19-22, 2005, p. 116a.

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Swanson, B. A., 1999, A new Permian vertebrate trackway locality in North-Cenral Oklahoma: Jounal of Vertebrate Paleontology, v. 19, supplement to n. 3, Abstracts of Papers, Fifty-ninth annual meeting, Society of Vertebrate Palaeontology, Adams Mark Hotel, Denver, Colorado, October 20-23, p. 80A.

T

Tilton, J. L., 1931, Permian vertebrate tracks in West Virgina: Bulletin of the Geological Society of America, v. 41, p. 547-556.

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V

Van Allen, H. E. K., and Calder, J. H., 2003, Brule: the earliest record of gregarious tetrapod behaviour in the world’s only known Walchian Conifer fossil forest: Geological Society of America, Northeastern Section, 38th annual meeting, v. 35, n. 3, p. 25.

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Voigt, S., and Haubold, H., 2002, The principal morphs of Lower Permian tetrapod tracks: Journal of Vertebrate Paleontology, v. 22, supplement to n. 3, Abstracts of Papers, Sixty-second annual Meeting of the Society of Vertebrate Paleontology, Sam Noble Oklahoma Museum of Natural History, University of Oklahoma, Norman Oklahoma, October 9-12, p. 117a.

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W

Wright, J. L., and Sansom, I. J., 1998, The earliest known terrestrial tetrapod skin impresions (Upper Carboniferous, Shropshire, UK): Journal of Vertebrate Paleontology, v. 18, supplement to n. 3, Abstracts of papers. Fifty-eighth annual meeting, Society of Vertebrate Paleontology, Snowbird Ski and Summer Resort, Snowbird, Utah, September 30-October 3, p. 88a.