Pseudofrenelopsis dinisii

Name

Pseudofrenelopsis dinisii

Rank

Species

Generic Name

[Genus] Pseudofrenelopsis

Authors (Name)

Mendes M. M. Kvaček J.  

Authors (Pub.)

Mendes M. M. Kvaček J. Doyle J. A.  

Publication

Pseudofrenelopsis dinisii, a new species of the extinct conifer family Cheirolepidiaceae from the probable lower Hauterivian (Cretaceous) of western Portugal [2023/5]

Journal

Review of Palaeobotany and Palynology

Volume

315

Issue

104905

Page number

5

Year

2023

Fossil Status

leafy twigs

Stratigraphy

Hauterivian

Strat. comment

Santa Susana Formation (maybe Valanginian)

Location

Vale de Cortiço opencast clay pit complex, between the Torres Vedras and Ameal localities, Estremadura region, western Portugal (39° 07′ 26″ N; 09° 14′ 17″ W)

Paleoregion

Eurasia (Europe)

Data for Holotypus

Repository

Museu Geológico, Laboratório Nacional de Energia e Geologia, Lisboa, Portugal

Repository Number

P1091 (Vale Cortiço sample 405)

Num

pl. I

Pub.

Pseudofrenelopsis dinisii, a new species of the extinct conifer family Cheirolepidiaceae from the probable lower Hauterivian (Cretaceous) of western Portugal [2023/5]

Data for Paratypus

Repository

Museu Geológico, Laboratório Nacional de Energia e Geologia, Lisboa, Portugal

Repository Number

P1083, P1084, P1085, P1086, P1087 (all from Vale Cortiço sample 400), P1088, P1089 (both from Vale Cortiço sample 406), P1090 (from Vale Cortiço sample 405), P1092, P1093, P1114, P1115, P1116, P1117 (all from Vale Cortiço sample 400)

Diagnosis

Shoots jointed, consisting of distinct nodes and internodes. Nodes slightly expanded, formed by free sheath of leaf. Terminal shoots with leaves of Brachyphyllum type. Leaves arranged in spiral, entirely encircling stem. Leaves with long attenuate apex. Leaf margins with well-pronounced trichomes. Abaxial (internodal) cuticle bearing stomata arranged in uniseriate rows. Surface of periclinal cell walls of ordinary cells either smooth or papillate, hollow papillae occurring particularly in leaf apex. Stomata surrounded by 4–6 subsidiary cells forming an external rim(Florin ring), each subsidiary cellwith a papilla. Adaxial cuticle smooth in apical part of leaf, slightly papillate in basal part, stomata surrounded by four subsidiary cells with or without papillae.