Cardobairdia, van den Bold, 1960
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publication ID |
https://doi.org/ 10.5252/geodiversitas2020v42a21 |
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publication LSID |
urn:lsid:zoobank.org:pub:7EC0E4FA-D538-4CE2-91B8-D7F549C32985 |
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DOI |
https://doi.org/10.5281/zenodo.4488361 |
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persistent identifier |
https://treatment.plazi.org/id/5A3887A8-FF80-0E67-0B00-FA1D18580F88 |
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treatment provided by |
Felipe |
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scientific name |
Cardobairdia |
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Cardobairdia ? sp.
( Fig. 8H View FIG )
EXAMINED MATERIAL. — One complete carapace and one right valve.
OCCURRENCE. — Nicoraella ? budaensis conodont zone, late Julian-?earliest Tuvalian, Carnian, Late Triassic, samples BE17, 18 ( Fig. 3 View FIG ), Belca section, ‘Raibl Beds’, Karavanke Mountains, Slovenia (this work).
DIMENSIONS. — L = 425 µm, H = 208 µm (BE17 [GeoZS6202]).
DISCUSSION
This species is rare in the sampled section and has only been found in samples BE17 and 18 ( Fig. 3 View FIG ). The genus Cardobairdia was described from the Middle Eocene of Trinidad (van den Bold 1960). Since then, it has been abundantly reported from Jurassic layers of western Tethys (e.g., Apostolescu 1959; Szczechura & Blaszyk 1968; Boomer 1991, 1992; Harloff & Jäger 1994; Monostori 1996; Boomer et al. 1998; Ainsworth & Boomer 2001; Olempska & Blaszyk 2001; N’Zaba-Makaya et al. 2003; Beher 2004). Until now, the oldest Cardobairdia was documented from the Early Jurassic of southern England ( Lord & Boomer 1988), of the Fastnet Basin off southwestern Ireland (Ainsworth 1986, 1987), of northern Wales (Boomer 1991) and of the continental slope off western Australia ( Lord et al. 1993). Noteworthy, the doubt on the generic attribution of the Belca’s specimens refers to the impossibility to observe their inner structures of the specimens and to confirm that the present material belongs to Cardobairdia such as described from Cenozoic deposits. However, the lateral morphology of Cardobairdia ? sp. from Belca conforms to the morphology of Jurassic occurrences, for which inner structures are most of the time not observed as well. In the present state of our knowledge, Cardobairdia ? sp. from the Belca section is the oldest occurrence of this genus worldwide.
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