Pseudoctenis babinensis J.Kvaček

Plant Fossil Names Registry Number: PFN000619

Act LSID: urn:lsid:plantfossilnames.org:act:619

Author: J. Kvaček

Rank: species

Reference: Kvaček, J. (2008): New cycad foliage of Pseudoctenis babinensis from the Bohemian Cenomanian. – Acta Musei Nationalis Pragae, Series B – Historia Naturalis 64(2–4): 125–131., link

Page of description: 126

Illustrations or figures: pl. 1, figs 1-7, pl. 2, figs 1-6

Types

Original diagnosis/description

Bipinnate fronds; rachis robust with numerous longitudinal ridges. Pinnae linear – lanceolate, entire-margined; apex attenuate, apex rather blunt; margins in the base running straight. Veins parallel-sided simple or forking once in the basal region; many veins ending in margins. Pinnae arising at a sharp angle of about 50–60˚. Leaves hypostomatic; adaxial cuticle showing quadrangular, isodiametric cells forming short rows, some cells slightly more cutinized. Abaxial cuticle bearing nearly isodiametric cells forming rows in costal areas and numerous trichome bases. Haplocheilic stomata sunken in pits surrounded by 8 subsidiary cells forming a rounded or elliptical rim. Stomata irregularly orientated, scattered with tendency to avoid costal areas.

Etymology

The name of the species is derived from the name of the part of the Pecínov Quarry – the pit Babín.

Stratigraphy

Cretaceous, Upper Cretaceous, Cenomanian
Peruc-Korycany Formation, unit 2 (according to Uličný and Špičáková 1996)

Locality

Czech Republic
Babín north open pit, Pecínov quarry