| Authors | Year | Title | |
|---|---|---|---|
|
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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|
Sheng | 1987 |
Carboniferous ammonoids from the Jingyuan district, Gansu.
Bull. Inst. Geol., Chinese Acad. Geol. Sci., 16: 143-193, fig.1-29, pl.1-5; Beijing.
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Titus | 2000 |
Late Mississippian (Arnsbergian Stage-E2 chronozone) ammonoid paleontology and biostratigraphy of the Antler foreland basin, California, Nevada, Utah.
Bulletin 131 Utah Geological Survey, 1-108, 51 text-figs., 17 tabls., 16 pls., Salt Lake City.
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