Psygmophyllum intermedium

Name

Psygmophyllum intermedium

Rank

Species

Generic Name

[Genus] Psygmophyllum

Authors (Pub.)

Naugolnykh S. V.  

Publication

Novyj vid roda Psygmophyllum Schimper iz nizhnej permi Urala [2012]

Journal

Paleontologicheskii Zhurnal

Annee/Jahrgang

2012

Issue

2

Page number

100

Year

2012

Fossil Status

foliage

Stratigraphy

Kungurian

Location

Suksun Area, village of Chekarda (locality Chekarda11, layer 10), left bank of the Sylva River immediately downstream of the Chekarda River mouth, Perm' Territory, Russian Federation

Paleoregion

Angarida

Data for Holotypus

Repository

Geological Institute, Russian Academy of Sciences, Moscow, Russian Federation

Repository Number

4856/248

Num

Figs. 3a, 3c, 3d, 4c–4e; Pl. 9, fig. 1; Pl. 10, figs. 1–8

Pub.

Novyj vid roda Psygmophyllum Schimper iz nizhnej permi Urala [2012]

Diagnosis

Leaves compound, with dichotomizing main rachis. Leaf lamina is dissected into lanceolate lobes connected by their bases. There are basal lobes and additional intercalating lobes located under place of main dichotomy of main rachis. Leaves are amphistomatic. Cuticles of both leaf sides are similar, but lower epidermis is thinner and bears more stomata. Stomata are monocyclic, with lips like thickenings on guard cells. Subsidiary cells are simple or bear small papillae and ring-shaped thickenings.