Perisyncolporites 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 : 20

Perisyncolporites sp.

Figure 5.5

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

Description. Monad pollen, apolar, radiosymmetric, spheroidal. Perisyncolporate, colpi with one or two endoapertures with irregular distribution, ora 2.5–4 µm in diameter, with costae. Exine tectate, 0.8–1 µm thick, suprarrugulate.

Dimensions. Diameter 34.4 µm x 32 µm, one specimen measured.

Comparisons. This taxon resembles Perisyncolporites pokornyi from the middle Eocene of Florida, U.S.A. (Jarzen et al., 2010), although P. pokornyi has a thicker exine (Jarzen et al., 2010: 2.5 – 3 µm) and a smaller size (23–26 µm).

Other occurrences. U.S.A. – Middle Miocene, Florida ( Jarzen and Klug, 2010). This genus has also been reported from the Paleogene of the Caribbean region and Nigeria ( Germeraad et al., 1968; Graham, 1990b) and the Paleogene of South America (Jaramillo and Dilcher, 2001).

Figures

FIGURE 5. Angiosperm pollen grains from the Cuayuca Formation. 1, Polyadopollenites sp. 2, Pb–9334(4): EF R37/ 4; 2-3, Polyadopollenites sp. 1, Pb–9340(1): 101.4/12.6; 4, Landolphia pollen type, Pb–9334(1): EF T41/1; 5, Perisyncolporites sp., Pb–9334(4): EF E44/1; 6, 10, Malpighiaceoidites sp., Pb–9334(4): EF H42/2; 7, 11, Mutisiapollis sp., Pb–8872(3): EF P33/4; 8-9, Striatricolporites sp., Pb–9336(1): EF G32/1; 12, Malvacipollis spinulosa, Pb- 9334(4): 94/7; 13, Ranunculacidites cf. communis, Pb–9334(4): EF D34/1/4; 14-15, Brosipollis sp., Pb–9334(4): EF U41/3; 16, Polyadopollenites sp. 1 Pb–9334(4): EF S39/4; 17, Tubulifloridites sp., Pb–9136(1): EF F39/4; 18, Ulmipollenites sp., Pb–9334(4): EF N40/1; 19, Thomsonipollis sabinetownensis, Pb-9334(4): 94.2/7.4; 20, Sabicea pollen type, Pb–9334(4): EF E42/1; 21, Ranunculacidites operculatus, Pb-9334(4): 101.8/7.2; 22 Rhamnaceaepollenites sp., Pb–9334(4): EF T32/2. Scale bar represents 10 µm.