In: New Mexico Museum of Natural History & Science bulletin, 2006, no. 37, p. 122
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In: Pennsylvanian footprints in the Black Warrior Basin of Alabama, 2005, p. 147
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In: New Mexico Museum of Natural History & Science bulletin, 2004, no. 25, p. 291
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In: Hallesches Jahrbuch für Geowissenschaften. Reihe B, Geologie, Paläontologie, Mineralogie, 2001, vol. 23, p. 69
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In: New Mexico Museum of Natural History & Science bulletin, 2004, no. 25, p. 285
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