Peramus sp.
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publication ID |
https://doi.org/ 10.5252/geodiversitas2022v44a25 |
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publication LSID |
urn:lsid:zoobank.org:pub:EA12DCB7-A5BE-4763-B805-25087EBD726D |
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DOI |
https://doi.org/10.5281/zenodo.6929072 |
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persistent identifier |
https://treatment.plazi.org/id/03C887B9-FF84-FFD8-74BE-A56AFE00FDC1 |
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treatment provided by |
Felipe |
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scientific name |
Peramus sp. |
| status |
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( Fig. 34 View FIG G-I)
DESCRIPTION
Peramuridae are represented by at least two lower molars. Only a left lower molar (ANG M-25), the talonid and the roots of which are missing, is figured herein ( Fig. 34 View FIG G-I). The talonid is present on the other molar, and it clearly displays a hypoconulid separated from the hypoconid, a diagnostic feature of Peramuridae ( Davis 2012) . The main cusp of the trigonid, i.e. the protoconid, is slightly inclined posteriorly ( Fig. 34H View FIG ). The paraconid is mesiodistally narrower and apicobasally shorter than the metaconid.It is located higher and in a more labial position. The metaconid is visible in labial view, whereas it is hidden by the protoconid in the Moroccan genus Minimus ( Sigogneau-Russell 1999).Both the anterolabial (cusp e) and the anterolateral (cusp f) marginal cuspules are preserved ( Fig.34G View FIG ). The latter is much more developed than the former. They define a strongly developed hypoconulid embrasure. All these features are more reminiscent of the lower molars (m2 and m3) of Peramus tenuirostris and P. dubius from the Berriasian of Dorset, England ( Clemens & Mills 1971), than to any other peramuran taxon (Sigogneau-Russell 1999). However, the scarcity of material prevents any comparison based on measurements, and does not allow a reliable specific identification ( Davis 2012). Thus, we assign this tooth to Peramus sp.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.