Namiurskiǐ ėtap v ėvoliutsii ammonoideǐ
Contributors: Bogoslovskaia, Margarita Fedorovna,
Series: Akademiia nauk SSSR.  Trudy paleontologicheskogo instituta t. 133
Publisher: "Nauka"
Published: 1971
Place of publication: Moskva
Language: rus
Number of pages: 382
Subjects: Ammonoidea; Paleontology -- Carboniferous.
Other titles: Namurian time in ammonoid evolution