Ostracoda - Podocopida - Bairdiidae

The new generic identification for Bairdoppilata comanchensis (Alexander, 1929) comb. nov. follows Maddocks (1969) and Becker et al. (1989). According to both, the genus Bairdia McCoy, 1844 (to which the present species was first assigned) is restricted to the Paleozoic period; the former also mentions that Bairdoppilata is virtually identical in external view to Bairdia, but presents a series of denticles ahead of both extremities of its hinge in internal view, and is confined to the CretaceousRecent. The present authors rely on both statements for the generic change herein performed. Several occurrences (including possible ones) of Bairdoppilata pseudoseptentrionalis Mertens, 1956 (Shahin 1991; Andreu & Bilotte 2006) are transferred to Bairdoppilata comanchensis comb. nov. based on differences in size and overall external shape from these specimens to the ones assigned by Mertens (1956). One of the specimens identified as Bairdoppilata comanchensis in Swain & Brown (1964: pl. 1, fig. 5a, c) belongs in fact to B. rotunda (Alexander, 1929) see the generic review in Howe & Laurencich (1958); the other one is from an unnamed taxon. The specimen in Neufville (1973), also figured in Reyment (1981), might belong to B. comanchensis comb. nov., despite differences in carapace size and dorsal margin morphology, possibly caused, respectively, by environmental and diagenetic factors. One of the specimens of Bairdia spp. figured in Rosenfeld & Raab (1974: pl. 1, fig. 14) also belongs to the same species, but these authors do not specify its range and geographical distribution, instead grouping it with all the others identified

as Bairdia; this problem was partly solved by Honigstein et al. (1985), who restricted the Bairdoppilata comanchensis specimens to the late CenomanianTuronian.

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Full reference: L. S. Antonietto, D. A. Do Carmo, M. C. Viviers, J. V. Queiroz Neto, and G. Hunt. 2016. Ostracoda (Arthropoda, Crustacea) from the Riachuelo Formation, Sergipe-Alagoas Basin, Brazil, upper Aptian-Albian. European Journal of Taxonomy 244:1-57

Belongs to Bairdoppilata according to L. S. Antonietto et al. 2016

Sister taxa: Bairdoppilata anachoreta, Bairdoppilata conformis, Bairdoppilata hirsuta, Bairdoppilata luminosa, Bairdoppilata poddari, Bairdoppilata pseudoseptentrionalis, Bairdoppilata taxodonta

Ecology: epifaunal detritivore-grazer

Distribution: there are no occurrences of Bairdoppilata comanchensis in the database

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Specimen images are retrieved through the ePANDDA API.