Description
Original description of Davis (1890) [631], p. 405, 406: Otodus limhamnensis, Davis, sp. nov. (PIS xar., fies, 12.)
The teeth which are included in this species are distinguished by the great strength and thickness of the crown, and by the large and prominent development of the root. The crown is 0:030m. in height; the width of the base is 0:020 m.; a lateral extension of the root beyond the width of the crown increases its width to 0:030m., and enables it to support on each side a lateral denticle. The outer coronal surface is convex in the median and upper parts; the lower part is depressed and flat; a slight median ridge extends from the base one-third of the height; enamel smooth. The inner coronal surface is deeply convex, expanding outwards at the base, without folds or striations. Lateral margins trenchant, continuous with the lateral denticles; the base of the enamel rises in a gentle curve from each side to the centre on both the inner and outer surface. The lateral denticles are strong, convex on each surface, rather more so on the inner than the outer one; margin with a sharp edge; point inclined away from the crown. Root large and massive, laterally extending beyond the enamelled surface. The outer surface is depressed from the base of the crown; from the inner coronal surface the root projects very boldly, extending forward nearly horizontally, the diameter being 0:016m. The inferior surface of the root is deeply concave in the middle, with lateral projections extending downwards at an acute angle. The specimens referred to this species are from Limhamn, in the district of Malma, in the Danien formation. They approach, on the one hand, Otodus appendiculatus, Agassiz, and on the other, Otodus spathula, Sauvage (“‘Bibl. Ecole Hautes Etudes,” vol. v., No. 9, p. 32, pl. 1, figs. 27-32). The latter is from the white chalk occurring at Villavard, in the Sarthe. form to the species now described. The crown is similar in the characteristic of the Sarthe species consists in the lateral cones being separated from the principal one; the enamel of the latter does not extend to the former. This feature separates it clearly from the Limhamn type, in which the lateral cones are connected by the continuity of the enamel with that of the crown; the downward projections of the root are also much deeper than in the examples described by Sauvage; and the root is altogether much thicker. The latter character serves also to distinguish the species from O. appendiculatus, Ag. The crown of the tooth is stronger and thicker, and more convex on both the inner and outer surfaces. Formation and Locality. tage Danien: Linhamn, Skane. Ex coll.—Riksmuseum, Stockholm.

Remarks
shark-references Species-ID=4436;

References