Calvaentolium Romanov, 1985
ROMANOV, L. F. 1985. Jurassic pectinoids from southern USSR. Kishinev. Shtiintsa. 231 p., pls. 1-30 (in Russian) [p. 35]
Entolium magneauritum (Kittl, 1903); A. Allasinaz, 1972, Revisione dei Pettinidi triassici, plate 36, figure 7.
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«Romanov (1985) gave generic names to the four groups established by Staesche (1926) within Entolium s. l. (see discussion in Damborenea, 2002a, p. 42–44). Staesche’s Entolium hehlii d’Orbigny group was included by Romanov (1985) in the new genus Calvaentolium (type species: Pecten magneauritus Kittl, 1904, from the Anisian of Yugoslavia), plus several Triassic species [C. pseudodiscites (Guembel), C. tribevicianum, C. magneauritum (Kittl), C. tridentini (Bittner), C. inornatum (Stoppani), C. saccoi (Parona), C. cainalloi (Stoppani), C. contemptibile (Stoppani)] and Jurassic species [C. calvum (Goldfuss, 1935 in 1833–1841), C. hehlii (d’Orbigny)]. He assigned it a Triassic–Jurassic range in Europe and Asia. In the absence of a good review on the Entolium group, we follow a conservative view and consider this group to be within Entolium, following Staesche (1926).
Waller (2006) regarded it as a valid genus and included it in his new family Entoliolidae Waller, 2006, along with other genera, and he even considered Crenamussium Newton in Newton & others, 1987, to be a junior synonym of Calvaentolium (see discussion for the family Entoliidae in Included Genera, p. 103).» ROS-FRANCH, S., A. MÁRQUEZ-ALIAGA & S. E. DAMBORENEA. 2014. Comprehensive database on Induan (Lower Triassic) to Sinemurian (Lower Jurassic) marine bivalve genera and their paleobiogeographic record. Paleontological Contributions, 8: 3-219, figs. 1-61. [p. 160]
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«This emended concept of the Palaeoentoliinae is based on shell microstructure and mineralogy, characters not considered by Romanov (1985), resulting in a reclassification of the five genera that Romanov (1985: 34) originally assigned to the subfamily: Palaeoentolium Romanov, 1985, Filopecten Allasinaz, 1972, Entolioides Allasinaz, 1972, Calvaentolium Romanov, 1985, and Neoentolium Romanov, 1985. Three of these, Filopecten, Entolioides, and Calvaentolium, are transferred in the present study to the family Entolioididae on the basis of their possession of an outer columnar prismatic layer on the right valve persisting throughout ontogeny.»
WALLER, T. R. 2006. Phylogeny of families in the Pectinoidea (Mollusca: Bivalvia): importance of the fossil record. Zoological Journal of the Linnean Society, 148: 313–342. [p. 325]
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