Mendozapollenites variabilis P.R.Gut. et Zavattieri

Plant Fossil Names Registry Number: PFN001786

Act LSID: urn:lsid:plantfossilnames.org:act:1786

Authors: P. R. Gutiérrez & A. M. Zavattieri

Rank: species

Genus: Mendozapollenites P.R.Gut. et Zavattieri

Reference: Gutiérrez, P. R. & Zavattieri, A. M. (2021): New Middle Triassic pollen taxa of the San Rafael Basin, Mendoza Province, Argentina. – Ameghiniana 58(1): 12–34., link

Page of description: 17

Illustrations or figures: figs 4, 5, 6.1–6.7

Name is type for

Mendozapollenites P.R.Gut. et Zavattieri 2021

Types

Holotype MPLP 5877(C) C44(1), Mendoza Paleopalinoteca-Laboratorio de Paleopalinología (IANIGLA), CCT CONICET, Mendoza, Argentina
Figures: fig. 4.1

Note: Paratypes:. MPLP 10348(G) J44(0) (Fig. 4.2), MPLP 5877(C) H40(0) (Fig. 4.3), MPLP 5877(E) S52(4) (Fig. 4.4), MPLP 5877(C) F53(1) (Fig. 4.5), BAPal 6612(7) D26(1) (Fig. 4.6), MPLP 5877(C) U38(0) (Fig. 5.1), MPLP 5877(C) F51(0) (Fig. 5.2), MPLP 5877(E) G48(0) (Fig. 5.3), BAPal 6612 (7) P45(4) (Fig. 5.4), MPLP 10352(E) K53(0) (Fig. 5.6), MPLP 10348(G) W39(4) (Fig. 5.8), BAPal MEB 6612 (TM) f011 (Fig. 6.1), BAPal MEB 6612(TM) f029 (Fig. 6.2), BAPal MEB 6612(TM) f036 (Fig. 6.3), BAPal MEB 6612(TP) f050 (Fig. 6.4), BAPal MEB 6612 (T1) f042 (Fig. 6.5), BAPal MEB 6612(TQ) f013 (Fig. 6.7), BAPal MEB 10374(TJ) f011 (Fig. 6.6).
Paratypes are housed in the Mendoza Paleopalinoteca-Laboratorio de Paleopalinología (MPLP) and in the Colección Nacional de Paleopalinología of the MACN (BAPal).

Original diagnosis/description

Pollen grain monosaccate, taeniate. In polar view it exhibits a subcircular to oval shape. Insertion of sacci subequatorial on both faces of the central body; proximal insertion slightly marked; on the distal face, a narrow and tapering cappula is developed along the corpus length, not reaching to the corpus margin. Near of the saccus, one or two grooves parallel to the cappula borders are present, generally associated with the folds. Intexine medium to thick. Central body of central to eccentrical position in polar view, variable in shape and size, associated with compressed folding of irregular position. The shape of the central body varies from polygonal, subcircular to oval, with the major axis parallel or perpendicular to the cappula. Cappa taeniate with up to 10 straight to curved taeniae, irregularly disposed but mainly developed in the longitudinal axis of the grain; they are partially parallel to each other or crossed between them in variable angles.

Etymology

The name alludes to the variable shape of the central body of the pollen grain.

Stratigraphy

Triassic, Middle Triassic, Ladinian
Quebrada de los Fósiles Formation, lower unit of the Puesto Viejo Group

Locality

Argentina
San Rafael Basin, Mendoza Province

Plant fossil remain

pollen and spores

Comments

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