Arecipites sp.

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 : 6-8

Arecipites sp.

Figure 3.1

Material. Samples Pb-9138, Pb-9337, Pb-8896, Pb-8897, Pb-8899, Pb-8902, and Pb-8872, Palynology Laboratory, IGLUNAM.

Description. Monad pollen, heteropolar, bilateral symmetry, amb oval, oblate. Monosulcate, sulcus extending full length of the grain and flared at ends. Exine tectate, columellate, 0.8 µm thick, microfoveolate with the arrangement of the columellae showing a very fine reticulate pattern.

Dimensions. Length 25.6–32 µm, width 13.6–22 µm, two specimens measured.

Comparisons. This species is very similar to Arecipites subverrucatus ( Barreda, 1997b) although differing in the smaller dimensions of our specimens. The Arecipites sp. from the Cuayuca Formation is not faintly scabrate as in A. FIGURE 3. Angiosperm pollen grains from the Cuayuca Formation. 1, Arecipites sp. , Pb–9137(1): EF R41/1; 2-3, Liliacidites sp. 1 , Pb–9136(1): EF U36/1); 4, Casuarinidites sp. , Pb–9136(2): EF J41/3; 5, Monoporopollenites sp. , Pb– 9334(4): Y38/1; 6, Liliacidites sp. 2 , Pb–9334(4): EF M31/3; 7, Aglaoreidia pristina , Pb-9334(4): 96.6/4; 8, Liliacidites sp. 3 , Pb–8871 (A): EF V41/4; 9, Chenopodipollis sp. , Pb–9334(4): EF U43/1; 10, Favitricolporites sp. , Pb–9138(’1): EF S32/3; 11, Armeria pollen type, Pb–9340(1): EF P33/3; 12-13, Fabaceae pollen type 1, Pb–9334(4): EF N37/1; 14- 15, Glycydendron pollen type, Pb–8872(1): EF O45/2; 16, Eucommia sp. , Pb–9334(1): EF E40/3; 17, Intratriporopollenites sp. , Pb–9340(1): EF H27/3; 18-20, Fabaceae pollen type 2, Pb–8890(1): N27/4; 21-22, Rhoipites aff. cryptoporus, Pb –8890(1): EF Q30/2; 23, Bombacacidites sp. , Pb–9334(4): EF V39/1. Scale bar represents 10 µm.

pseudotranquilus ( Nichols et al., 1973), nor as granulate as in A. pertusus (Elsik in Stover et al., 1966). Arecipites sp. described by Jarzen and Klug (2010) has a scabrate, foveolate to finely reticulate surface, a pattern very similar to the Mexican specimens, although differing in the dimensions (Florida specimens: 45-57 µm long axis; 30-38 µm short axis; Mexican specimens: 25–32 µm long axis, 13– 22 µm short axis). The Mexican specimens are very similar to the Arecipites sp. ( Christopher et al., 1980, plate 3, figures 1–2) from the Paleocene of Warm Springs, Georgia ( Christopher et al., 1980).

Other occurrences. This genus has been reported in Mexican paleobasins from Eocene to Oligocene Simojovel, Chiapas ( Tomasini-Ortiz and Martínez-Hernández, 1984). Reports of the occurrence of Arecipites - type pollen in the Caribbean region and in Texas ( U.S.A.) are discussed in Jarzen and Klug (2010).