|
Kullmann, Wagner & Winkler_Prins |
2007 |
Significance for international correlation of the Perapertú Formation in Northern Palencia, Cantabrian Mountains. Tectonic/stratigraphic context and description of Mississippian and Upper Bashkirian Goniatites.
Revista Española de Paleontología, 22 (2), 127-145, 8 fig., Madrid.
|
|
|
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.
|