Kajanthus M.M.Mendes, G.W.Grimm, Pais et E.M.Friis

Plant Fossil Names Registry Number: PFN001906

Act LSID: urn:lsid:plantfossilnames.org:act:1906

Authors: M. M. Mendes, G. W. Grimm, J. Pais & E. M. Friis

Rank: genus

Reference: Mendes, M. M., Grimm, G. W., Pais, J. & Friis, E. M. (2014): Fossil Kajanthus lusitanicus gen. et sp. nov. from Portugal: floral evidence for Early Cretaceous Lardizabalaceae (Ranunculales, basal eudicot). – Grana 53(4): 283–301.

Page of description: 286


Kajanthus lusitanicus M.M.Mendes, G.W.Grimm, Pais et E.M.Friis

Original diagnosis/description

Flower small, trimerous, with staminate and pistillate organs in the same flower. Floral parts tightly packed. Perianth composed of six bulky perianth parts arranged in two whorls surrounded by narrow perianth parts, apparently also in two whorls. Androecium of six stamens in two whorls on the same radii as the bulky perianth parts. Stamen base broad and bulky. Anther broadly attached to the stamen base. Anthers tetrasporangiate with projecting theca. Dehiscence extrorse by longitudinal slits. Pollen tricolpate with finely punctate tectum. Gynoecium superior composed of three free carpels closely adhering along the ventral faces. Carpels of almost the same breadth and width for their full length. Placentation marginal with many slightly curved ovules arranged in two longitudinal rows. Stigmatic surface at top of carpels undifferentiated.


In honour of Kaj Raunsgaard Pedersen for his contribution to the study of the Early Cretaceous floras in Portugal.

Plant fossil remain

macro- and meso-fossils-embryophytes except wood

Names associated with genus

Kajanthus lusitanicus M.M.Mendes, G.W.Grimm, Pais et E.M.Friis 2014


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