Maiaspora panopta D.A.Mamontov, D.McLean, O.A.Orlova et O.A.Gavrilova

Plant Fossil Names Registry Number: PFN002759


Authors: D. A. Mamontov, D. McLean, O. A. Orlova & O. A. Gavrilova

Rank: species

Genus: Maiaspora D.A.Mamontov, D.McLean, O.A.Orlova et O.A.Gavrilova

Reference: Mamontov, D. A., McLean, D., Orlova, O. A. & Gavrilova, O. A. (2019): Maiaspora: a new miospore genus with enigmatic sculpture from the late Visean of European Russia. – Papers in Palaeontology 7(online)(1): 263–306.

Page of description: 280

Illustrations or figures: figs 6, 7A–D, 8, 9A–I, 10–12, 13A–C, 14

Name is type for

Maiaspora D.A.Mamontov, D.McLean, O.A.Orlova et O.A.Gavrilova 2019


Holotype 336-28, Lomonosov Moscow State University, Moscow, Russian Federation
Figures: figs 7A–D, 9A, 10I

Note: Holotype: Collection MSU-GF-336, slide MS-7-1-HL, England Finder H40/2.

Original diagnosis/description

Spores radial, trilete, acavate, azonate. Amb triangular with straight or concave sides, rounded apices. Laesura straight with delicate labra, three-quarters or four-fifths of the spore radius in length. Exospore is relatively thin. Proximal and distal surfaces are covered by biform sculpture with a reticulum decorated by apiculate elements (verrucae, coni, tuberculae) to produce a metareticuloid sculpture. Muri are low, slightly sinuous and clearly tapered at the top, more or less triangular in vertical cross-section. Lumina are polygonal. Distinct, circular or elliptical scrobiculae occur at the bases of the lumina and open as vertical, funnel-like tunnels (Fig. 5).


From the Greek panoptes, all-seeing, in Greek mythology the epithet was applied to the giant Argus who had a hundred eyes; in reference to the numerous scrobiculae on the spores.


Carboniferous, Mississippian, Visean
Mikhaylovian regional substage, late Visean


Russian Federation
Layer 7, sample 7-1, Mstikhino Quarry, southern wing of Moscow Syneclise, Kaluga Region, European Russia

Plant fossil remain

pollen and spores