Krassilovianthus sarbaensis

Name

Krassilovianthus sarbaensis

Rank

Species

Generic Name

[Genus] Krassilovianthus

Authors (Pub.)

Maslova N. P. Tekleva M. V. Remizowa M. V.  

Publication

Krassilovianthus gen. nov., a new staminate inflorescence with similarities to Platanaceae and Hamamelidaceae from the Cenomanian–Turonian of western Kazakhstan [2012/4]

Journal

Review of Palaeobotany and Palynology

Volume

180

Page number

2

Year

2012

Fossil Status

inflorescences (male)

Stratigraphy

Cenomanian

Strat. comment

Turonian - Zhirkindekian suite

Location

Sarbaj, western Kazakhstan

Paleoregion

Eurasia (Central Asia)

Data for Holotypus

Repository

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

Repository Number

417/101

Num

1: 4

Pub.

Krassilovianthus gen. nov., a new staminate inflorescence with similarities to Platanaceae and Hamamelidaceae from the Cenomanian–Turonian of western Kazakhstan [2012/4]

Diagnosis

Sessile staminate heads 2–3 mm in diameter. Up to 40 flowers per head. Perianth well-developed, exceeding stamen length. Epidermis of outer and inner perianth elements differs. Flowers with two stamens. Stamen filaments lacking. Anthers bisporangiate and dithecate. Pollen sacs narrow, elongated, with almost parallel margins, occasionally confluent basally, but free for most of their length. Connective indistinguishable. Epidermis of pollen sac apices bears stomata and rare trichome bases. Pollen small, tricolporate and finely reticulate. Lumina varying in shape and size and forming labyrinthine pattern. Colpi length about 2/3 of polar axis; aperture membrane granular.