Symplocos trisulcata Huegele et Manchester

Plant Fossil Names Registry Number: PFN000579


Authors: I. B. Huegele & S. R. Manchester

Rank: species

Reference: Huegele, I. B. & Manchester, S. R. (2019): Newly recognized diversity of fruits and seeds from the Late Paleogene flora of Trinity County, East Texas, USA. – International Journal of Plant Sciences 180(7): 681–708.

Page of description: 697

Illustrations or figures: Figs. 9B1-6


Holotype USNM 722019, National Museum of Natural History, Smithsonian Institution, Washington, D.C., United States
Figures: Fig. 9B

Note: Paratype: USNM 722020

Original diagnosis/description

Endocarp globose, spherical, 3.8–4.4 mm in diameter, ornamented by three longitudinal grooves that begin and end just short of the apex and base. Apical pit shallow, ca. 1.8 mm wide, 43% of the maximum endocarp width, thin walled, single pored, and sharply truncating the endocarp. Three
locules—surficially indicated by longitudinal grooves that connect to weakly sutured septa (fig. 9B6)—are strongly curved. Basal pit prominent, ca. 0.6 mm in diameter.


Named for the three longitudinal grooves on its endocarp from the Latin prefix tri- (three) and adjective sulcata (grooved).


Paleogene, Eocene
Whitsett Formation


United States
Trinity, Texas (USNM loc. 44273)

Plant fossil remain

macro- and meso-fossils-embryophytes except wood


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