Personal tools

You are here: Home / Virtual collections / Paleontology / Paleobotany / Lobatannularia heianensis Kawasaki

Lobatannularia heianensis Kawasaki

IRSNB b 8664; Carboniferous; Lao Shih Shan; China

IRSNB b 8664

IG: 15929               Reg.: 85754

Âge: Carboniferous

Localité : Assise de Hung Ho, Affleurement à l'extrémité Sud-Ouest de la colline Lao Shih Shan, China

Description: Figured Specimen

Diagnose (donnée par Kawasaki) : Stems and branches divided into nodes and internodes, the surface of the internodes longitudinally ridged and grooved. From the nodes are given off leaf-sheaths, usually split into two almost equal multinerved lobes with short blunt teeth along their margins, spreading out in apparent! y opposite pairs at an angle of 45°-90° to the stems. The lobes vary in form, mostly broadly oval, but sometimes oblong-lanceolate, consisting of 8-37 linear-lanceolate segments each with a faint median vein united with prominent longitudinal suturallines. The segments are unequal in length, the lateral ones generally shorter than the median, and each broadest about the upper part. Median vein as wells as suturai line does not fork or anastomose, approaching one another at the base with slight inclination to converge toward the apex, the former terminating in the bluntly toothed apex and the latter in the notch.

Stockmans, F. & Mathieu, F. La Flore Paléozoïque du Bassin Houiller de Kaiping (Chine). Association pour l’étude de la Paléontologie et de la Stratigraphie houillères, n°32
p. 50, Planche XV, fig. 6

  • Filed under: