Callialastrobus sousai J.Kvaček et M.M.Mendes

Plant Fossil Names Registry Number: PFN000989

Act LSID: urn:lsid:plantfossilnames.org:act:989

Authors: J. Kvaček & M. M. Mendes

Rank: species

Genus: Callialastrobus J.Kvaček et M.M.Mendes

Reference: Kvaček, J. & Mendes, M. M. (2020): Callialastrobus sousai gen. et sp. nov., a new araucariaceous pollen cone from the Early Cretaceous of Catefica (Lusitanian Basin, western Portugal) bearing Callialasporites and Araucariacites pollen. – Review of Palaeobotany and Palynology 283: 104313 (9 pp.).

Page of description: 5

Illustrations or figures: pls I–III

Name is type for

Types

Original diagnosis/description

Ovoid pollen cone with numerous (about 30) microsporophylls arranged helically on a slender axis. Each peltate microsporophyll consists of well-developed deltoid distal lamina and narrow stalk. Three ovoid elongate pollen sacs, containing Callialasporites and Araucariacites pollen types. Pollen sacs free of each other. Stomata scattered on distal parts of peltate microsporophylls, each surrounded by delicate rim. Inaperturate Araucariacites pollen grains with finely granulate to scabrate exine surface co-occur with smaller, inaperturate, monosaccate Callialasporites pollen grains with finely granulate exine.

Etymology

In honor of Professor Manuel João Lemos de Sousa in recognition of his important contribution to the geology of Portugal.

Stratigraphy

Cretaceous, Lower Cretaceous
Almargem Formation (upper Aptian-lower Albian)

Locality

Portugal
Catefica outcrop section close to the Torres Vedras locality, Estremadura region, western Portugal (39° 03′ 14.4″ N; 09° 14′ 24.1″ W)