NATICIDAE Guilding, 1834

Sarr, Raphaël, Hill, Robert V., Jenkins, Xavier A., Tapanila, Leif & O'Leary, Maureen A., 2024, A Composite Section of Fossiliferous Late Cretaceous- Early Paleogene Localities in Senegal and Preliminary Description of a New Late Maastrichtian Vertebrate Fossil Assemblage, American Museum Novitates 2024 (4013), pp. 1-32 : 20-22

NATICIDAE Guilding, 1834

Naticidae indet.

Figure 11B

REFERRED MATERIAL: SEN 071.

DESCRIPTION: Cast (formed in situ) of a naticid shell.

DISCUSSION: This specimen preserves an internal cast of a globose shell with three whorls. The cast is broken off such that the full extent of the body whorl cannot be discerned; however, the cross section of this break is semilunar, suggesting a semilunar aperture morphology. The overall morphology is similar to that for specimens tentatively attributed to Euspira by O’Leary et al. (2019).

VERTEBRATA Lamarck, 1801

CHONDRICHTHYES Huxley, 1880

ELASMOBRANCHII Bonaparte, 1838

Elasmobranchii indet.

Figure 9D

REFERRED MATERIAL: SEN 090.

DESCRIPTION: Isolated dermal denticle.

DISCUSSION: SEN 090 is tentatively identified as an elasmobranch dermal denticle. It is semicircular with a maximum dimension of 7 mm and possesses a conical spine centered along the edge. The spine is densely ornamented with small, uniform, circular pits. Surrounding the spine on three sides, there is a flat region ornamented with round, sparsely distributed tubercles.

OSTEICHTHYES Huxley, 1880

ACTINOPTERYGII Woodward, 1901

NEOPTERYGII Regan, 1923

PYCNODONTIFORMES Berg, 1937

Figures

FIGURE 11. Maastrichtian invertebrates (internal molds formed in situ) of the Cap de Naze Formation discovered at the North Quarry of Poponguine. A, Turritellidae cf. Mesalia (SEN 060) natural cast in?abapertural view; and B, Naticidae indet. (SEN 071), natural cast in apical view. Scale = 1 cm.