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Swiss Journal of Geosciences
Fig. 1 | Swiss Journal of Geosciences

Fig. 1

From: Size distribution of the Late Devonian ammonoid Prolobites: indication for possible mass spawning events

Fig. 1

Conch morphology of species of Prolobites. a Prolobites delphinus (Sandberger & Sandberger 1851), specimen SMF 34701 (Wunderlich Coll.) from Enkeberg; ×1.5. b Prolobites aktubensis Bogoslovsky 1969, specimen SMF 34691 (Ademmer Coll.) from Kattensiepen; ×2.0. c Prolobites delphinus (Sandberger & Sandberger 1851), reproduction from Sandberger and Sandberger (1850–1856); ×1.0. d Sporadoceras bidens (Sandberger & Sandberger 1851), reproduction from Sandberger and Sandberger (1850–1856); ×1.0. Scale bar units = 1 mm

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