Carpolithes sp. 2

Tiffney, Bruce H. & Manchester, Steven R., 2022, The Early Middle Eocene Wagon Bed Carpoflora Of Central Wyoming, U. S. A., Fossil Imprint 78 (1), pp. 51-79 : 67

publication ID

https://doi.org/ 10.37520/fi.2022.004

persistent identifier

https://treatment.plazi.org/id/039C6431-0824-FFCF-A076-91EDD5F1F90B

treatment provided by

Felipe

scientific name

Carpolithes sp. 2
status

 

Carpolithes sp. 2

Text-fig. 8f–j View Text-fig

M a t e r i a l. One specimen, chalcedony cast, USNM

PAL 772367.

D e s c r i p t i o n. Disseminule narrowly ovate to ovate in lateral view, nearly circular in cross section, 9.6 mm in length, 5.6 by 5.7 mm in cross section. The broad basal end has a central point of attachment, lateral to which on one side is a distinct structure consisting of two parallel smooth lineations flanking a wider, raised, central zone of elongate cells ( Text-fig. 8f View Text-fig ). This extends approximately 40 % of the length of the structure before being obliterated by erosion of the surface. A very faint single line occurs on the opposing margin of the structure, extending about 50 % of the length of the structure before similarly being eradicated by erosion of the surface of the object.

D i s c u s s i o n. The basal scar and particularly the well-developed lineation on one side suggest that this could be interpreted as a seed with a lateral vascular strand or raphe. However, the apical end of the seed is badly eroded so that the full path of the raphe-like structure cannot be traced. There is a similarity in form and size to the seeds of Nuphar SM. ( Nymphaeaceae SALISB. ), but details of the cellular structure and operculum are not available to confirm its identity.

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