Todites nanjingensis

Name

Todites nanjingensis

Rank

Species

Generic Name

[Genus] Todites

Authors (Pub.)

Wang Y.-D. Cao Z.-Y. Thévenard F.  

Publication

Additional data on Todites (Osmundaceae) from the Lower Jurassic—with special references to the paleogeographical and stratigraphical distributions in China [2005/12]

Journal

Geobios

Volume

38

Issue

6

Page number

831

Year

2005

Parent Taxon

[Genus] Todites

Fossil Status

foliage

Stratigraphy

Lower Jurassic

Strat. comment

Nanxiangshan Formation

Location

Daijiaku of Cangbomen and Shifo’an, Nanjing, Jiangsu Province, China

Paleoregion

Eurasia (China)

Data for Holotypus

Repository

Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, China

Repository Number

PB 19807

Num

fig. 5(6)

Pub.

Additional data on Todites (Osmundaceae) from the Lower Jurassic—with special references to the paleogeographical and stratigraphical distributions in China [2005/12]

Diagnosis

Frond at least bipinnate. Main rachis straight and strong, about 1.5–2 mm wide, bearing a wing with striking ridge on surface. Pinnae subopposite to alternate, arising at a wide angle from the rachis. Ultimate pinnules small, ca. 3 mm long and 2 mm wide, Pecopteris-like, arising at a right angle from the pinna rachis. Pinnules closely set, margins entire without lobes, catadromic. Basal pair of the lower side pinnules enlarged. Venation delicate but distinct; midrib slightly decurrent, bifurcating and almost disappearing near the apex. Lateral veins fine and distinct, anadromic branching straight or slightly arching, bifurcating once to twice. Fertile pinnae linear to lanceolate, more or less resembling sterile, but more slender. Venation indistinct, secondary veins bifurcating twice. Sporangia closely covering the dorsal surface of pinnules, rounded to oval in shape, about 150–180 µm in diameter.