 | 1922 - 170 pages
...Gigantopteris, and cf. Sphenophyllum. * * » The plants listed above and found associated with the tracks led White in his letter to the writer dated June 27,...preservation of the fragments is so bad that caution is •> Ransome, FL, op. dt., p. 162. « Schudiert, Charles, op. rat., pp. 353-354. » Lull, R. 8., Fossil... | |
 | 1902 - 286 pages
...Gigantopteris, and cf. Sphenophyllwn. * * » The plants listed above and found associated with the tracks led White in his letter to the writer dated June 27,...preservation of the fragments is so bad that caution is M Ransome, F. L,., op. dt., p. 162. "Schuchert, Charles, op. cit., pp. 353-354. » Lull, B. 8., Fossil... | |
 | 1919 - 294 pages
...Gigantopteris ? cf. Sphenophyllum." David White, in a letter quoted on page 354 of Schuchert's article, says : "The condition of preservation of the fragments is...on the material submitted. However, the presence of Gigantopteris, Walchia, and probably of Callipteris, if my tentative generic identification of the... | |
 | Geological Survey (U.S.) - 1922 - 732 pages
...Giganlopteris, and cf. Sphenophyllnm. * * * The plants listed above and found associated with the tracks led White in his letter to the writer dated June 27,...preservation of the fragments is so bad that caution is " Ransome, FL, op. dt., p. 102. H Schuchert, Charles, op. dt., pp. 353-3M. » Lull, KS, Fossil footprints... | |
 | United States National Museum - 1928 - 792 pages
...age of the deposit, but the plants led Doctor White to consider the Lower Permian as most probable. " The condition of preservation of the fragments is...on the material submitted. However, the presence of Gigantopteris, Walchia, and probably of Cattipteris, if my tentative generic classification of the... | |
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The condition of preservation of the fragments is so bad that caution is necessary in basing conclusions of any kind on the material submitted. However, the presence of... 