Pazlia hilaris E.M.Friis, P.R.Crane et K.R.Pedersen
Plant Fossil Names Registry Number: PFN000091
Act LSID: urn:lsid:plantfossilnames.org:act:91
Genus: Pazlia E.M.Friis, P.R.Crane et K.R.Pedersen
Reference: Friis, E. M., Crane, P. R. & Pedersen, K. R. (2018): Extinct taxa of exotestal seeds close to Austrobaileyales and Nymphaeales from the Early Cretaceous of Portugal. – Fossil Imprint 74(1–2): 135–158.
Page of description: 140
Illustrations or figures: text-figs 3a–e, 4a, b
Name is type for
Holotype S175096, Palaeobotanical Collections, Department of Palaeobiology, the Swedish Museum of Natural History, Stockholm, Sweden
Figures: text-figs 3a–d, 4a, b
Note: Paratypes: S174336, S174342, S175083, S175098, S175105, S175106 (deposited in Palaeobotanical Collections, Department of Palaeobiology, the Swedish Museum of Natural History, Stockholm, Sweden)
Isolated seeds occurring singly. Seeds small, anatropous, bitegmic and exotestal. Seeds bilaterally symmetrical with dorsiventral plane of symmetry. Seed surface smooth without longitudinal ridges. Raphe distinct, seen externally as a raised, rounded ridge that extends from hilum to the chalazal end opposite the micropyle. Hilum and micropyle separated by a broad zone of testal sclerenchyma. Hilar scar large, narrowly elongate with abundant sclerenchyma tissue beneath the scar and lacking a hilar rim. Micropyle formed by the inner integument (tegmen) and marked on the seed surface by a transverse slit through the outer integument (testa) adjacent to the hilar scar. Testa formed from an outer layer (exotesta) of palisade-shaped sclerenchyma cells and an inner thin layer of thin-walled parenchyma cells (mesotesta/endotesta). Palisade-shaped cells of exotesta with evenly thickened anticlinal walls and a straight lumen. Anticlinal walls of the exotesta cells strongly undulate toward the inside and toward the outside, resulting in stellate-undulate facets and a jigsaw puzzle-like pattern on the seed surface. Tegmen thin.
From Latin: hilaris, relating to the hilum to emphasis the large hilar scar and strongly developed sclerenchyma tissue under hilum.
Cretaceous, Lower Cretaceous
Aptian – early Albian or older
Type horizon: below the Figueira da Foz Formation
Famalicão (39°42′16″N; 8°46′12″W)
Plant fossil remain
macro- and meso-fossils-embryophytes except wood
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