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
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
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.
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.
From Latin: operculum referring to the presence of an operculum at the micropyle region.
Cretaceous, Lower Cretaceous
Lower member of the Almargem Formation; Early Cretaceous (late Barremian-early Aptian).
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
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