Corsinipollenites sp. 3

Ramírez-Arriaga, Elia, Prámparo, Mercedes B. & Martínez-Hernández, Enrique, 2014, Angiosperm pollen grains from the Cuayuca Formation (Late Eocene to Early Oligocene), Puebla, Mexico, Palaeontologia Electronica 102 (8), pp. 1-38 : 21

Corsinipollenites sp. 3

Figure 4.2

Material. Sample Pb-9334, Palynology Laboratory, IGLUNAM.

Description. Monad pollen, isopolar, radiosymmetric, amb triangular. Triporate, pores aspidate. Exine tectate, granulate, 0.8–1 P m thick, psilate.

Dimensions. Equatorial diameter 41–50 µm, three specimens measured.

Comparisons. This species of Corsinipollenites exhibits a characteristic pore with evident granulate structure. Although granulate structure is present in Corsinipollenites sp. 1 and Corsinipollenites sp. 2 , more aspidate pores are present in Corsinipollenites sp. 1 ; Corsinipollenites sp. 2 presents less aspidate pores than the other two species described. Corsinipollenites sp. 3 has similar dimensions and annulus thickness to Corsinipollenites atlantica described from the Argentinian Oligocene–Miocene by Barreda and Palamarczuk (2000b); nevertheless, the exine of C. atlantica is thicker. This taxon closely resembles Corsinipolleites cf. psilatus from the Melot Basin, southeast Sudan ( Eisawi and Schrank, 2008).

Figures

FIGURE 4. Angiosperm pollen grains from the Cuayuca Formation. 1, Corsinipollenites sp. 1, Pb–9334(1): EF G33/ 3; 2, Corsinipollenites sp. 3, Pb–9334(4): EF R36/1; 3, Corsinipollenites sp. 2, Pb–9334(4): EF T35/3; 4-5, Margocolporites sp., Pb–9340(1): EF N35/3; 6, Margocolporites aff. vanwijhei, Pb-9334(1'): EF T39/2; 7, Monocolpopollenites aff. texensis Nichols, Ames and Traverse 1973 Pb–8872(1A): EF W29/1; 8-9 Rhoipites sp., Pb–8890(1):101.9/17.2; 10, Lymingtonia sp., Pb–9334(4): EF S32/4; 11, Momipites tenuipolus Pb-9334(4): 101.6/12.5; 12, Momipites coryloides, Pb-9138’(1): 92.2/2.8; 13, Fabaceae pollen type 3, Pb–9334(4): EF M34/4; 14, Clavainaperturites sp., Pb– 9147(2): EF R34/2; 15, Linum pollen type, Pb–9334 (1’): EF S33/2; 16, Magnaperiporites sp., Pb–9334(4): EF R39/2; 9. Scale bar represnts 10 µm.