Parvamussium nonarium (Quenstedt, 1857)
QUENSTEDT, F. A. 1856-1858. Der Jura. 823 p., pls. 1-100. H. Laupp’schen, Tübingen. [p. 795, pl. 98, fig. 4]
1855 Pecten lorierianus Cotteau, 1855
1857 Pecten nonarius Quenstedt, 1857
1874 Pecten poecilographus Gemmelaro & Di Blasi, 1874
1893 Pecten (Amusium) sokolowi Retowski, 1893
1893 Pecten (Amusium) pawlowi Retowski, 1893
1897 Pecten spendiarowi Abel, 1897
1926 Variamussium quinquenarium Berckemer in Staesche, 1926
1857 Pecten nonarius Quenstedt, 1857
1874 Pecten poecilographus Gemmelaro & Di Blasi, 1874
1893 Pecten (Amusium) sokolowi Retowski, 1893
1893 Pecten (Amusium) pawlowi Retowski, 1893
1897 Pecten spendiarowi Abel, 1897
1926 Variamussium quinquenarium Berckemer in Staesche, 1926
F. A. Quenstedt, 1856-1858,
plate 98. |
«Nur den kleinen Pecten nonarius tab. 98, fig. 4 möchte ich besonders hervorheben, wie undenarius pag. 321 und Consorten zeigen die Steinkerne neun innere sehr dicke Hauptrippen. Bei groβen, wie unsere Figur, stellt sich an Rande noch eine kurze Zwischenrippe ein. Im uebrigen Iätβt sich nicht viel wahrnehmen, man sieht nur, daβ die Schale Ohren und feine Streifen hatte. Söslingen, Mähringen.»
FIEDRICH AUGUST QUENSTEDT, 1857
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«Johnson (1984) revised the Jurassic Propeamussiidae from Europe and adjacent regions and recognised three species, which he assigned to the genus Propeamussium; however, that author did not discuss the relationships between Propeamussium, Parvamussium and allied genera. From his descriptions, however, it becomes clear that the Jurassic species all retain at least a weak byssal notch in adulthood and thus belong to Parvamussium according to the taxonomic concept applied herein. This observation is supported by Waller (2006), although he regarded the Early to Middle Jurassic representatives of the Propeamussiidae as intermediate between the Triassic genus Filamussium Waller, 2006 and the Late Jurassic to Recent Parvamussium, based on differences in the ordering of calcite prisms. Since Waller (2006) did not establish a separate genus for Early to Middle Jurassic taxa, we herein continue to treat the respective species as representatives of Parvamussium.»
SCHNEIDER, S., J. S. CRAMPTON & A. LUKENEDER. 2013. Propeamussiidae, Inoceramidae, and other Bivalvia from the Lower Cretaceous Puez Formation (Valanginian–Cenomanian; Dolomites, South Tyrol, Italy). Cretaceous Research, 46: 216-231, figs. 1-12. [p. 225]
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