Authors Year Title
Bogoslovskaya 1990 Osnovye puti razvitiya i klassifikatsiya pozdnepaleozoyskikh ammonoidey Marathonitaceae i Cyclolobaceae.
Trudy Paleontologicheskogo Instituta Akademiya Nauk SSSR, 243: 70-86, fig.1-3; Moskva.
Glenister & Furnish 1987 New Permian representatives of ammonoid superfamilies Marathonitaceae and Cyclolobaceae.
Journal of Paleontology, 61 (5): 982-998, fig.1-4, 1tab.; Lawrence, Kansas.
Leonova 1982 Rannepermskie marathonitidy (Ammonoidea) na Pamire.
Paleontologicheskiy Zhurnal, 1982 (3): 25-34, fig.1-6, pl.2; Moskva.
Leonova & Dmitriev 1989 Rannepermskie ammonoidei Yugo-Vostochnogo Pamira.
Trudy Paleontologicheskogo Instituta Akademiya Nauk SSSR, 235: 1-198, fig.1-79, pl.1-16; Moskva.
Leonova 1999 Pamirskii tsentr diversifikatsii permskikh ammonoidei. [In Russian, with English summary: A Pamirian Center of Diversification of Permian Ammonoids.]
Paleontologicheskii Zhurnal, 1999 (4): 27-37, 8 figs., Moskva.