Anaspermum operculatum E.M.Friis, P.R.Crane et K.R.Pedersen

Plant Fossil Names Registry Number: PFN000455

Act LSID: urn:lsid:plantfossilnames.org:act:455

Authors: E. M. Friis, P. R. Crane & K. R. Pedersen

Rank: species

Genus: Anaspermum E.M.Friis, P.R.Crane et K.R.Pedersen

Reference: Friis, E. M., Crane, P. R. & Pedersen, K. R. (2019): The Early Cretaceous mesofossil flora of Torres Vedras (NE of Forte da Forca), Portugal: a palaeofloristic analysis of an early angiosperm community. – Fossil Imprint 75(2): 153–257.

Page of description: 176

Illustrations or figures: Text-fig. 15d–j

Name is type for

Anaspermum E.M.Friis, P.R.Crane et K.R.Pedersen 2019

Types

Holotype S136740, Palaeobotanical Collections, Department of Palaeobiology, the Swedish Museum of Natural History, Stockholm, Sweden
Figures: Text-fig. 15d

Note: Holotype from Torres Vedras sample 43.

Paratypes: S174608 (Torres Vedras sample 38); S136739, S136742, S136743, S136746, S170071, S170082-S170084, S170093, S174990 (Torres Vedras sample 43) housed in Palaeobotanical Collections, Department of Palaeobiology, the Swedish Museum of Natural History, Stockholm, Sweden.

Original diagnosis/description

Seeds small, anatropous, apparently bitegmic and exotestal, occurring isolated and singly. Seeds bilaterally symmetrical with a dorsiventral plane of
symmetry. Seed surface smooth without longitudinal ridges. Course of raphe seen on the surface of the seed as a slightly raised ridge. Micropyle and hilar scar closely spaced on a small cap-like structure. Exotesta of short sclerenchyma cells with undulate anticlinal walls, resulting in stellateundulate facets and a jigsaw puzzle-like pattern on the seed surface.

Etymology

From Latin: operculum referring to the presence of an operculum at the micropyle region.

Stratigraphy

Cretaceous, Lower Cretaceous
Lower member of the Almargem Formation; Early Cretaceous (late Barremian-early Aptian).

Locality

Portugal
Torres Vedras (NE of Forte de Forca; 39°06′13″ N, 9°14′47″ W)

Plant fossil remain

macro- and meso-fossils-embryophytes except wood

Comments

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