Valviloculus pleristaminis gen. et sp. nov., a Lauralean fossil flower with valvate anthers from mid-Cretaceous Myanmar amber
DOI:
https://doi.org/10.17348/jbrit.v14.i2.1014Resumen
La flor descrita aquí como Valviloculus pleristaminis, un nuevo género y especie de angiospermas fósiles, se obtuvo de depósitos de ámbar de Myanmar que datan del Cretácico medio. La flor es estaminada, con una copa floral ovoide, hueca. El perianto consiste en 6 tépalos, uno de los cuales se perdió antes de la conservación. Numerosos estambres dispuestos helicoidalmente nacen en el extremo de la flor. Las anteras son biloculares, con sacos polínicos dehiscentes por valvas unidas lateralmente. El extremo del conectivo lleva un apéndice acopado. El gineceo está representado solo por un grupo de estilos vestigiales centrados entre los estambres. El fósil se asigna provisionalmente al orden Laurales, sus afinidades más cercanas son con las familias Monimiaceae y Atherospermataceae.
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