Falcatidae, Zangerl, 1990
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publication ID |
https://doi.org/ 10.4202/app.00619.2019 |
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persistent identifier |
https://treatment.plazi.org/id/DD016347-6071-FFCE-FC8E-5DEBFD55E3EE |
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treatment provided by |
Felipe |
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scientific name |
Falcatidae |
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Falcatidae indet. 2
Fig. 4D, E View Fig .
Material.— Twelve teeth (ZPAL P. IV/217, 226, 324–333) from the upper Viséan, Czerna, sample Cz-1.
Description.— The teeth of Falcatidae indet. 2 have wide and short bases with the orolingual button at the lingual rim. The button is perforated from the lingual side and yet another foramen opens between the button and the median cusp. The crown is cladodont, with a prominent median cusp, rounded in cross section and covered with numerous subparallel cristae. The lateral cusps are relatively low. There occur pentacuspid specimens ( Fig. 4D View Fig ) and, fewer and larger, seven-cuspid specimens ( Fig. 4E View Fig ). In the latter, the outer lateral cusps are the highest and there are two pairs of intermediate cusplets. The teeth are relatively large, 1–2 mm mesio-distally.
Remarks.— The teeth of Falcatide indet. 2 are very similar to those of Denaea cf. fournieri sensu Ginter et al. (2015) , particularly as far as the form of the crown is concerned. However, it should be reminded that in the latter publication there were noted differences between the forms of the bases in two groups of specimens. Those from the Holy Cross Mountains ( Poland) and Rhenish Mountains ( Germany) are characterised by broad bases and vague buttons, but those from Cawdor Quarry in Derbyshire ( UK), and especially from the sample Cawdor 11 ( Ginter et al. 2015: fig. 7D–G) have short bases (labio-lingually) with a strong button sticking lingually, exactly like in pentacuspid specimens of Falcatidae indet. 2. Perhaps then, the material from the sample Cawdor 11 ( UK) and Falcatidae indet. 2 from Czerna represent a new taxon, different from Polish and German Denaea cf. fournieri , as tentatively suggested by Ginter et al. (2015: 910).
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