@article {6710,
	title = {Brachiopoden, Lamellibranchiaten und Gastropoden aus der oberen Trias der Insel Seran (Mittel-Seran)},
	journal = {Palaeontographica},
	volume = {Supplement 4, part 3},
	year = {1923},
	note = {DO NOT HAVEPl. 12-15},
	pages = {185-246},
	keywords = {gervilleioperna, taxonomy},
	author = {Krumbeck, Lothar}
}
@article {1311,
	title = {Brachiopoden, Lamellibranchiaten und Gastropoden aus der oberen Trias der Insel Seran (Mittel-Seran)},
	journal = {Palaeontographica},
	volume = {Supplement},
	year = {1923},
	pages = {185-246},
	keywords = {gervilleioperna, taxonomy},
	author = {Krumbeck, Lothar}
}
