Tagged: Eocene


Ceratopetalum edgardoromeroi Gandolfo and Hermsen, sp. nov.

A new addition to the Patagonian Ceratopetalum five-winged fossil fruit family

Museomic approaches are employed in order to establish an evolutionary, palaeoecological, and biogeographic context for radially symmetrical, five-winged fossil fruits from the highly diverse early Eocene Laguna del Hunco flora of Chubut Province. Gandolfo and Hermsen draw comparisons with other fossil and modern fruits and describe the new species Ceratopetalum edgardo-romeroi (Cunoniaceae). In addition to sharing several characteristics, such as symmetry, number of fruit wings and presence of a conspicuous floral nectary, which unequivocally place this new fossil species within the genus Ceratopetalum, the venation pattern of the minor fruit wings (sepals) is unique within the genus and diagnostically heralds...

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A new fossil taxon of Asteraceae

A new fossil taxon of Asteraceae

Barreda et al. describe Raiguenrayun cura gen. & sp. nov., an extinct Eocene taxon of the daisy family that might represent the ancestor of Mutisioideae–Carduoideae, based on an exceptionally well preserved capitulescence of Asteraceae recovered from a 47.5 million-year-old formation in north-west Patagonia, Argentina. The new fossil represents the first reliable point for calibration, favouring an earlier date to the split between Barnadesioideae and the rest of Asteraceae than previously thought. This is the oldest well-dated Asteraceae and perhaps the earliest indirect evidence for bird pollination in the family.

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