Liliacidites sp. 2

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 : 8

Liliacidites sp. 2

Figure 3.6

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

Description. Monad pollen, heteropolar, bilateral symmetry, amb oval. Monosulcate. Exine semitectate, collumelate, 1 µm thick, reticulate, heterobrochate, brochi 1.5–2 µm diminishing size toward the aperture and muri of 0.8 µm wide.

Dimensions. Length 32 µm, width 22 µm, one specimen measured.

Comparisons. Liliacidites sp. 2 has muri distinctively wider (0.8 µm) than those of Liliacidites sp.1 and Liliacidites sp. 3 of the Cuayuca assemblage. Liliacidites sp. 2 has a reticulum very similar to Liliacidites sp. 1 ( Wingate, 1983, plate 2, figure 8) from Elko, Nevada ( U.S. A), although Liliacidites sp. 1 has greater dimensions: 38 µm length and 30 µm width ( Wingate, 1983).