Ascarinophyllum pecinovense

Name

Ascarinophyllum pecinovense

Rank

Species

Generic Name

[Genus] Ascarinophyllum

Authors (Pub.)

Čepičková J. Kvaček J.  

Publication

Fossil leaves of Cenomanian basal angiosperms from the Peruc-Korycany Formation, Czechia, central Europe [2022/11]

Journal

Review of Palaeobotany and Palynology

Volume

309

Issue

104802

Page number

6

Year

2022

Fossil Status

leaves

Stratigraphy

Cenomanian

Strat. comment

Peruc-Korycany Formation

Location

Pecínov quarry, Czech Republic

Paleoregion

Eurasia (Europe)

Data for Holotypus

Repository

Národní Muzeum, Prague, Czech Republic

Repository Number

NMP F 4585, coll. number: 41/2016

Num

Plate II, 1

Pub.

Fossil leaves of Cenomanian basal angiosperms from the Peruc-Korycany Formation, Czechia, central Europe [2022/11]

Data for Paratypus

Repository

Národní Muzeum, Prague, Czech Republic

Repository Number

NMP F 4591 [Plate III, 1], NMP F 4779b [Fig. III, 2,3], No. NMP F 4776 [Plate III, 4], No. NMP F 4777 [Plate III, 5]

Num

Plate III, 1, 2, 3, 4, 5

Pub.

Fossil leaves of Cenomanian basal angiosperms from the Peruc-Korycany Formation, Czechia, central Europe [2022/11]

Diagnosis

Leaf simple, narrowly elliptic serrate. Leaf apex acute, base narrow acute to acute. Petiole short and robust. Serration occurring in the upper two thirds of leaf margin. Each tooth rounded, bearing papilla, basal and apical sides convex. Venation pinnate, festooned semicraspedodromous, midrib robust. Leaf coriaceous, hypostomatic with resin bodies. Adaxial cuticle ofmedium thicknesswith isodiametric, polygonal ordinary cells with straight to slightly wavy anticlinal walls. External surface of adaxial cuticle slightlywavy. Abaxial cuticle ofmedium thickness bearing isodiametric, polygonal ordinary cells with straight to slightly wavy anticlinal walls. Stomata of variable type, predominantly laterocytic/ laterocyclocytic, stephanocytic-bicyclic, and amphibrachyparacytic, and less frequently brachyparacytic and holoparacytic with irregularly occurring T-shaped thickenings of the internal cuticle at the poles; externally surrounded by stomatal rims. Abaxial cuticle externally striate, striations either radial around stomata, or irregular.