Dictyoconinae Schubert, 1912
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publication ID |
https://doi.org/10.35463/j.apr.2024.02.08 |
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persistent identifier |
https://treatment.plazi.org/id/03C4E42E-FFEB-FFF1-73B5-7099909C5E74 |
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treatment provided by |
Felipe |
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scientific name |
Dictyoconinae Schubert, 1912 |
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Subfamily Dictyoconinae Schubert, 1912 View in CoL
Orbitolinidae gen. et sp. indet.
Fig. 7a View Fig ?, b-g
Remarks: The available sections do not allow for a precise taxonomic analysis nor whether we are dealing with a single species or more. The specimen illustrated in fig. 7a with its possibly adult annular chambers recalls to some extent the Lower Cretaceous Coskinolinella Delmas & Deloffre, 1961 (see Cherchi, 1985). Other undoubtly megalospheric specimens show a biloculine embryo (proto- and deuteroconch) arranged in a distinct early trochospire ( Fig. 7 View Fig e-g). While some sections exhibit the presence of a single rafter in the marginal zone ( Fig. 7a, d View Fig , f-g), others show two orders ( Fig. 7b View Fig ). Foramina appear to be restricted to the central part due to a welldeveloped marginal zone with rather long chamber passages ( Fig. 7b View Fig ). Further conclusions need more material.
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