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Authors |
Year |
Title |
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Clardy |
1962 |
Goniatite cephalopod faunas from the Hale Formation.
Compass 39 (3): 103-109, 1fig., 1tab., pl.1-2;
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Easton |
1943 |
The fauna of the Pitkin Formation of Arkansas.
Journal of Paleontology, 17 (2): 125-154, fig.1, pl.21-24; Tulsa,Oklahoma.
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Gordon |
1965 |
Carboniferous Cephalopods of Arkansas.
Professional Papers, U.S. Geological Survey, 460: 1-322, fig.1-96, pl.1-32; Washington. [imprint 1964].
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Gordon |
1969 |
An Early Reticuloceras Zone Fauna From the Hale Formation in Northwestern Arkansas.
Geological Survey Professional Paper 613-A: A1-A21, 12 text-fig., 2 pl. Washington. [imprint 1968].
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Popov |
1975 |
Ammonoidea (Ammonoidei). In: Paleontologicheskii Atlas kamennougol'nykh otlozhenii Urala. [In Russian].
Trudy VNIGRI 383: 111-130, pls.35-44, Leningrad (Nedra).
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Quinn |
1963 |
Stratigraphic Position of Eoasianites globosus.
Oklahoma Geology Notes, 23 (2): 26-28, fig.1-2; Norman.
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Ruzhencev & Bogoslovskaya |
1971a |
Namiurskii etap v evoliutsii ammonodei. Rannenamiurskie ammonoidei.
Trudy Paleontologicheskogo Instituta Akademiya Nauk SSSR, 133: 1-382, fig.1-89, pl.1-40; Moskva.
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Saunders |
1971 |
The Somoholitidae: Mississippian to Permian ammonoids.
Journal of Paleontology, 45 (1): 100-118, fig.1-6, pl.23-24; Tulsa, Okla.
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