Palaeogaleus aff. faujasi ( Geyn, 1937 )
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publication ID |
https://doi.org/ 10.4202/app.2012.0123 |
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persistent identifier |
https://treatment.plazi.org/id/C45E8796-6968-1967-FFDB-38C1FD3EB47C |
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treatment provided by |
Felipe |
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scientific name |
Palaeogaleus aff. faujasi ( Geyn, 1937 ) |
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Palaeogaleus aff. faujasi ( Geyn, 1937)
Fig. 9A–F View Fig ,?G.
Material.—16 teeth from the Ce of Stevns Kridtbrud (MGUH 29872, MGUH 29873, GMV2012-78 [batch number]) and four from Kulstirenden (Br1) (MGUH 29874–29877).
Description.—Teeth displaying moderate degree of monognathic heterodonty. Anterior teeth are symmetrical and narrow with a large elongated triangular main cusp that is flanked by two pairs of small triangular cusplets diminishing in size outwards. Lateral teeth are wider, but still retain a more or less symmetrical shape with an erect main cusp whereas in posterior teeth the main cusp is declined towards the commissure. The labial face of the crown is convex and in general smooth, but may carry strong short folds below the shoulders in some specimens. In anterior teeth the basal edge of the crown is convex, whereas lateral and posterior teeth have a median indented basal edge. The labial face strongly overhangs the root. The lingual face is smooth and convex. The root is missing in most specimens, but some remnants indicate a low bilobed root with a flat basal face and a deep median groove. One of the specimens ( Fig. 9G View Fig ) has a more narrow crown and more robust labial folds. It may represent an extreme variant or an undescribed species. For the moment is best referred to as Triakidae sp.
Teeth reaching 2.0 mm in height and 2.5 mm in width.
Remarks.—Several Cretaceous and Paleocene species of Palaeogaleus have been described from Europe, North Africa, and North America all of which show a marked degree of intraspecific variation. The Danish material is more similar to the Maastrichtian P. jaujasi of the Netherland ( Geyn 1937b) than the Paleocene P. vincenti of Belgium ( Daimeries 1888), as the apex of the cusplets in P. vincenti is more blunt than observed in P. faujasi . Additionally some tooth positions in P. vincenti can have a heavily folded labial crown base. Cvancara and Hoganson (1993: fig. 3Z–AA) depicted two incomplete specimens which they referred to as P. vincenti , but could as well be conspecific with the Danish material.
Stratigraphic and geographic range.—Late Cretaceous: late Campanian of France ( Vullo 2005), Maastrichtian of the Netherlands ( Geyn 1937b; Herman 1977) and Spain ( Cappetta and Corral 1999) to the Danian (early Paleocene) of Denmark.
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