Serialis crassitesta E.M.Friis, P.R.Crane et K.R.Pedersen

Plant Fossil Names Registry Number: PFN000130


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

Rank: species

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

Reference: Friis, E. M., Crane, P. R. & Pedersen, K. R. (2019): Extinct Diversity among Early Cretaceous Angiosperms: Mesofossil Evidence of Early Magnoliales from Portugal. – International Journal of Plant Sciences 180(2): 93–127.

Page of description: 109

Illustrations or figures: figs 13, 14


Holotype S170231 (Famalicão 25), Palaeobotanical Collections, Department of Palaeobiology, the Swedish Museum of Natural History, Stockholm, Sweden
Figures: figs 13A–D, 14D

Note: Paratypes: S153509, S174815, S174818, S175124–S175127 (Famalicão sample 25).

Original diagnosis/description

As for the genus with the following additions: Fruit elliptical to circular in lateral view. Surface of fruit smooth. Stigma restricted. Seeds four to five. Endotesta much thicker thanmesotesta.Mesotesta one cell layer thick; cells cubic; anticlinal walls very thin and undulate toward the inside and outside, thick in themedian partwith smooth inner surfaces. Endoreticulate infillings of the endotesta cells dense. Endotesta without interspersed cavities. Ovular vascular bundle in endotesta. Testa surrounding micropyle not swollen. Outer epidermis of tegmen with thin-walled, slightly elongate cells.


From the thick testa (Latin cassus [thick] and testa [outer seed coat].


Cretaceous, Lower Cretaceous
below the Figueira da Foz Formation; Early Cretaceous (late Aptian–early Albian or older)


Famalicão (lat. 39°42′16″N, long. 8°46′12″W)

Plant fossil remain

macro- and meso-fossils-embryophytes except wood


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