Parvamussium atkinsoni (Johnston, 1880)
JOHNSTON, R. M. 1880. Third contribution to the natural history of the Tertiary marine beds at Table Cape with a descriptionof 30 new species of Mollusca. Papers and Proceedings and Report of the Royal Society of Tasmania, 1879: 29-41. [p. 41]
1880 Amusium atkinsoni Johnston, 1880
«Shell very minute; equivalve suborbicular; ears unequal; dorsal and ventral surface slightly convex, and composed of a distinct layer densely regularly concentrically striated, frequently detached partly from inner smooth layer; inside of both valves concave, shallow, shining, with 10 smooth raised radiating riblets, which terminate truncately near margin; riblets not raised on dorsal or ventral surface, although they may be traced by faint dark pellucid lines. Long. 4, lat. 4. Rare, Table Cape.»
ROBERT MACKENZIE JOHNSTON, 1880
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«During the Cenozoic, Parvamussium was present in Europe (see records and bibliography in SCHULTZ 2001), eastern Asia (MASUDA 1962), and western North America where at least five Paleocene to Pleistocene species have been described (see MOORE 1984 for bibliography). In eastern North America, P. alabamense (ALDRICH, 1886) was recorded from the Matthews Landing Member, Porters Creek Formation, Midway Group (Paleocene) of Alabama, Arkansas and Texas by GARDNER (1935: 144) and PALMER & BRANN (1965: 28; as “Amusium (Propeamussium) alabamense”). In the Southern Hemisphere Parvamussium is recorded in New Zealand from Eocene times onwards; seven Cenozoic species have been described (MAXWELL 1988; BEU & MAXWELL 1990; MAXWELL 1992). DARRAGH (1994, 1997) recorded it in southern Australian Paleocene-Miocene strata, recording P. sp. cf. hauniense RAVN, 1939 from the Paleocene Pebble Point Formation in Victoria (also present in the Paleocene of Denmark and Germany; ANDERSON 1973). DARRAGH (1994: 84) also recorded P. atkinsoni (JOHNSTON, 1880) from Late Eocene-Middle Miocene rocks in southern Australia.»
DEL RÍO, C. J., A. BEU & S. A. MARTÍNEZ. 2008. The pectinoidean genera Delectopecten Stewart, 1930 and Parvamussium Sacco, 1897 in the Danian of Northern Patagonia, Argentina. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, 249: 281-295, figs. 1-4. [p. 284]
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