Samylinaea punctatus, E. M. FRIIS, K. R. PEDERSEN et MARONE, 2014
publication ID |
https://doi.org/ 10.2478/if-2019-0013 |
persistent identifier |
https://treatment.plazi.org/id/0396DC10-BF03-C20D-CED5-B15EE6AE1E31 |
treatment provided by |
Diego |
scientific name |
Samylinaea punctatus |
status |
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Arcellites punctatus E.M.FRIIS, K.R.PEDERSEN et MARONE, 2014
Text-fig. 6c, d View Text-fig
D e s c r i p t i o n a n d r e m a r k s. The species is common in the Torres Vedras mesofossil flora from which more than 100 specimens of megaspores, often with associated microspores ( Friis et al. 2014b) have been recovered. The megaspores are spherical, lack appendages on the spore wall and have a long, twisted acrolamella often with smooth microspores attached to its surface ( Text-fig. 6c, d View Text-fig ).
A f f i n i t y a n d o t h e r o c c u r r e n c e s. Arcellites punctatus is the only species of Arcellites currently recognized in the mesofossil floras from the Early Cretaceous of Portugal. In addition to the specimens from Torres Vedras, other (rare) specimens are known only from Buarcos and Catefica. The presence of an acrolamella, and the associated microspores, clearly indicate a relationship to extant Marsileaceae , with the fossil genus most likely on the stem group of the extant family.
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