Sequoioxylon carneyvillense Long Li, J.H.Jin et Manchester
Plant Fossil Names Registry Number: PFN000291
Act LSID: urn:lsid:plantfossilnames.org:act:291
Reference: Li, L., Jin, J. -H. & Manchester, S. R. (2018): Cupressaceae fossil remains from the Paleocene of Carneyville, Wyoming. – Review of Palaeobotany and Palynology 251: 1–13.
Page of description: 4
Illustrations or figures: pl. I
Holotype USW057, Museum of Biology, Sun Yat-sen University, Guangzhou, China
Figures: pl. I
Growth rings distinct with abrupt transition fromearlywood to latewood; circular bordered pits on radial tracheid walls uni- to triseriate, predominantly biseriate, opposite; notched pits present; circular bordered pits uni- and biseriate rarely present on tangential tracheid walls. Cross-field pits exclusively taxodioid, circular to oval, 1–4 pits per cross-field, arranged in one or two seriate; axial parenchyma diffuse, horizontal walls of parenchyma cells smooth, cells containing dark deposits; rays uniseriate, sometimes partially biseriate to occasionally partially triseriate; both horizontal and tangential walls of ray cells smooth; ray tracheids absent; resin ducts not observed.
The specific name refers to “Carneyville” the former town near the site name where the fossils were collected.
Fort Union Formation, late Palaeocene
specimens were collected in a road cut of the highway near Carneyville, Wyoming, UF locality 19382, 44°55.130′ N, 106°56.524′ W
Plant fossil remain