Zamites pateri J.Kvaček

Plant Fossil Names Registry Number: PFN003021

Act LSID: urn:lsid:plantfossilnames.org:act:3021

Author: J. Kvaček

Rank: species

Genus:

Reference: Kvaček, J. (2022): New species of Zamites from the Cenomanian of the Bohemian Cretaceous Basin. – Fossil Imprint 78(2): 425–431.

Page of description: 427

Illustrations or figures: text-figs 1, 2

Types

Original diagnosis/description

Leaf simply pinnate, pinnae linear to narrowly lanceolate, entire-margined. Base of pinna slightly contracted, apex unknown. Veins 2–3 per mm, simple or rarely dichotomising. Leaf hypostomatic. Adaxial cuticle very thin, bearing polygonal cells with tightly sinuous anticlinal walls. Mesophyll present, consisting of isodiametric cells. Abaxial cuticle thick, showing distinct marginal band bearing tetragonal ordinary cells. Inner part of leaf consists of costal ordinary cells forming zones typically narrower than intercostal zones, formed by 4–5 rows of syndetocheilic stomata (sometimes ill-defined). Subsidiary cells large, ellipsoidal, thickly cutinised, bearing one or several papillae. Ordinary cells of intercostal zone polygonal in shape with roughly straight anticlinal walls. Ordinary cells of costal zones quadrangular in shape with sinuous anticlinal walls. Epidermal cells of both costal and intercostal zones bearing 3–5 papillae.

Stratigraphy

Cretaceous, Upper Cretaceous, Cenomanian
Peruc-Korycany Formation

Locality

Czech Republic
Pecínov quarry, 50 km west of Prague