Malpighiaceoidites 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

Malpighiaceoidites sp.

Figures 5.6, 5.10

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

Description. Monad pollen, apolar, radiosymmetric, spheroidal. Perisyncolporate, six to eight pores distributed irregularly and joined with colpi. Exine atectate, 1.5–2 µm thick, supraverrucate, verrucae irregular supratectal, 0.5–4 µm wide.

Dimensions. Diameter 25 (29.9) 33.6 µm, five specimens measured.

Comparisons. The Malpighiaceoidites sp. has pores connected by thin colpal bands, like the Type A described by Martin (2002); nevertheless, the Malpighiaceoidites sp. exhibits verrucae bigger than those presented by Type A of Martin (2002). Malpighiaceae specimens recovered in Central America by Graham (1985, 1988, 1989, 1990b) are different from those of the Cuayuca Formation. Perisyncolporites pokornyi reported from the Miocene of Venezuela ( Lorente, 1986) and from the Río Turbio Formation (Eocene) from Argentina ( Fernández et al., 2012) has a thicker exine without the distinctive verrucae present in the Cuayuca Formation specimen.

Other occurrences. The genus Malpighiaceoidites has been recovered only from the Miocene of Venezuela ( Lorente, 1986), Paleocene of São Paulo, Brazil ( Lima et al., 1991), Eocene of Argentina ( Fernández et al., 2012), and Tertiary rocks from southeastern Australia ( Martin, 2002).

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.