Equicalastrobus Grauvogel-Stamm et Ash

Plant Fossil Names Registry Number: PFN003559

Act LSID: urn:lsid:plantfossilnames.org:act:3559

Authors: L. Grauvogel-Stamm & S. R. Ash

Rank: genus

Reference for this name: Grauvogel-Stamm, L. & Ash, S. R. (1999): “Lycostrobus” chinleana, an equisetalean cone from the Upper Triassic of the southwestern United States and its phylogenetic implications. – American Journal of Botany 86(10): 1391–1405.

Page of description: 1393

Type

Original diagnosis/description

Cone, cylindrical, pedunculate, consisting of a stout axis bearing peltate sporangiophores in whorls; sporangiophores consisting of a slender stalk and a hexagonal disk; middle of outer surface of disk bearing a single lanceolate, generally long, forward-directed leaf-like umbo tip; inner surface of disk bearing several recurrent sporangia containing small round to oval trilete spores.

Etymology

The generic name denotes the intermediate morphology of the cone between those of Equisetum and Calamites.