Pazlia E.M.Friis, P.R.Crane et K.R.Pedersen

Plant Fossil Names Registry Number: PFN000090

Act LSID: urn:lsid:plantfossilnames.org:act:90

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

Rank: genus

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

Type taxon

Pazlia hilaris E.M.Friis, P.R.Crane et K.R.Pedersen

Original protologue

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.

Etymology

From Greek παζλ: jigsaw puzzle, for the distinct jigsaw puzzle-like outline of the facets of the exotestal cells.

Plant fossil remain

macro- and meso-fossils-embryophytes except wood

Names associated with genus

Pazlia hilaris E.M.Friis, P.R.Crane et K.R.Pedersen 2018