Globularia (Globularia) patula ( Lamarck, 1804 )

Caze, Bruno, Merle, Didier, Meur, Mathieu Le, Pacaud, Jean-Michel, Ledon, Daniel & Martin, Jean-Paul Saint, 2011, Taxonomic implications of the residual colour patterns of ampullinid gastropods and their contribution to the discrimination from naticids, Acta Palaeontologica Polonica 56 (2), pp. 329-347 : 336

publication ID

https://doi.org/ 10.4202/app.2009.0084

persistent identifier

https://treatment.plazi.org/id/E8075B43-A57F-FFDA-3F06-F9C670CC2240

treatment provided by

Felipe

scientific name

Globularia (Globularia) patula ( Lamarck, 1804 )
status

 

Globularia (Globularia) patula ( Lamarck, 1804) View in CoL

Fig. 4G–L View Fig .

Stratigraphic and geographic range.—Middle Eocene, Lutetian–Bartonian (PB, HB).

Colour pattern description.—The pattern consists of four levels of residual colouration. The background is heterogeneous with two broad slightly fluorescent diffuse spiral stripes on the adapical and adbasal parts of the whorl ( Fig. 4I–L View Fig ). The apex is pale and there are one ( Fig. 4I–K View Fig ) or two ( Fig. 4G, H, L View Fig ) fluorescent sharply delineated spiral stripes superimposed on the background. These two straight fluorescent spiral stripes, superimposed on the dark median “stripe” of the background, are located near its adbasal margin and on its adapical margin. They do not become diffuse through ontogenesis. The adapical one is absent in the shells showing only one stripe ( Fig. 4I–K View Fig ).

Globularia (Globularia) semipatula ( Deshayes, 1864) Fig. 4M View Fig .

Stratigraphic and geographic range.—Late Palaeocene, Thanetian–Middle Eocene, Ypresian (Cuisian) (PB).

Colour pattern description.—This species shows three levels of residual colouration. The background is dark and homogeneous. The apex is pale and there are axial thin fluorescent zigzagging stripes ( Fig. 4M View Fig ). The axial thin stripes present a regular distribution. The zigzags occur along the whole height of the stripes and display variable amplitude. There is intraspecific variability in the number and density of the axial thin stripes. This residual colour pattern is very similar to those of Globularia (G.) splendida ( Deshayes, 1864) from the Ypresian of the Paris Basin ( Fig. 4N View Fig ) and Globularia (G.) patuloides (Cossmann, 1902) from the Bartonian of the Paris Basin ( Fig. 4O View Fig ).

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Family

Ampullinidae

Genus

Globularia

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