Asclepiadospermum marginatum C.Del Rio, Su et Z.K.Zhou in Del Rio, Wang, Liu, Liang, Spicer, Wu, Zhou & Su

Plant Fossil Names Registry Number: PFN000893

Act LSID: urn:lsid:plantfossilnames.org:act:893

Authors: C. Del Rio, T. Su & Z. K. Zhou

Rank: species

Genus: Asclepiadospermum C.Del Rio, Su et Z.K.Zhou in Del Rio, Wang, Liu, Liang, Spicer, Wu, Zhou & Su

Reference: Del Rio, C., Wang, T. X., Liu, J., Liang, S. Q., Spicer, R. A., Wu, F. X., Zhou, Z. K. & Su, T. (2020): Asclepiadospermum gen. nov., the earliest fossil record of Asclepiadoideae (Apocynaceae) from the early Eocene of central Qinghai-Tibetan Plateau, and its biogeographic implications. – American Journal of Botany 107(1): 126–138.

Page of description: 129

Illustrations or figures: Fig. 2

Name is type for

Types

Original diagnosis/description

Seed pear-shaped, tapering rapidly toward a blunt to slightly round apex with a small bump, and rounded at the base; central part oval and smooth,
surrounded by a wide margin; a straight median line corresponding to the trace left by the raphe runs from the apex to the center of the seed. Cells are polygonal and irregularly arranged.

Etymology

The specific epithet marginatum refers to the exceptionally wide margin that characterizes this species.

Stratigraphy

Paleogene, Eocene
The Lower Eocene Niubao Formation

Locality

China
Jianglang village, Bangor County, Central Qinghai-Tibetan Plateau (31°37.5′N, 90°1.5′E)