Pseudotorellia insolita

Name

Pseudotorellia insolita

Rank

Species

Generic Name

[Genus] Pseudotorellia

Authors (Pub.)

Nosova N. V. Golovneva L. B.  

Publication

Novyj vid Pseudotorellia Florin (Ginkgoales) iz verkhnemelovykh otlozhenij Leno-Vilyujskoj vpadiny (Vostochnaya Sibir') [2011]

Journal

Paleobotanika

Volume

2

Page number

93

Year

2011

Fossil Status

foliage

Stratigraphy

Turonian

Strat. comment

Timmerdyakh Formation: — Coniacian

Location

Viljui River Basin, Yakutia (Saha) Republic, Russian Federation

Paleoregion

Eurasia (Siberia)

Data for Holotypus

Repository

Komarov Botanical Institute, Russian Academy of Sciences, St.-Petersburg, Russian Federation

Repository Number

№ 1196/1871

Num

1: 1

Pub.

Novyj vid Pseudotorellia Florin (Ginkgoales) iz verkhnemelovykh otlozhenij Leno-Vilyujskoj vpadiny (Vostochnaya Sibir') [2011]

Diagnosis

Leaf wide oval with acute apex; more than 16 veins in the widest part of lamina. Veins interchanging with resin ducts. Leaf hypostomatic. Lower epidermis consists of stomatal and nonstomatal bands. Stomata orientated longitudinally, rarely obliquely or transversely, 2—4 per the stomatal band. Each subsidiary cell with proximal papillae. Most of the ordinary cells of the lower epidermis display a narrow cuticular ridge or, sometimes, papillate. Anticlinal cell walls of the upper and lower epidermis undulate; cell angles rounded. Periclinal walls of upper epidermis smooth.