Acer postense

Taxonavigation

Taxonavigation: Sapindales
Classification System: APG IV Superregnum: Eukaryota Cladus: Diaphoretickes Cladus: CAM Cladus: Archaeplastida Regnum: Plantae Cladus: Angiosperms Cladus: Eudicots Cladus: Core eudicots Cladus: Rosids Cladus: Eurosids II Ordo: Sapindales

Familia: Sapindaceae
Subfamilia: Hippocastanoideae
Tribus: Acereae
Genus: Acer
Sectio: A. sect. Acer
Series: A. ser. Acer
Species:†Acer postense

Name

†Acer postense J.A.Wolfe & Tanai J. Fac. Sci. Hokkaido Univ., Ser. 4, Geol., 22(1): 170 pl. 17, figs. 7, 12-14, 17, 18. Feb 1987

Type material

• Holotype: UCMP 9184 (fruit)
  • Repository: Museum of Paleontology, University of California Berkeley, Berkeley, Alameda County, California, Unites States

• Paratypes: UCMP 9185-9188, 9230 (fruit)
  • Repository: Museum of Paleontology, University of California Berkeley, Berkeley, Alameda County, California, Unites States

9184-9188, 9230

Type locality

• Eocene, Priabonian; John Day Formation, Sheep Rock Creek flora; Teater Road/Sheep Rock Creek (OMSI 256, UF 256, UCMP PA1105), Crook County, Oregon, United States
  • note:First listed Clarno Formation. The age and formation of the site were revised by Manchester and McIntosh (2007) to the Priabonian of the John Day Formation

Etymology

• "Post, Oregon, is the settlement nearest to the type locality."

Distribution

Eocene

• Priabonian/Chadronian
  • John Day Formation, Sheep Rock Creek flora; Teater Road/Sheep Rock Creek (OMSI 256, UF 256, UCMP PA1105), Crook County, Oregon, United States

References

Primary references

• Wolfe, J.A. & Tanai, T. 1987. Systematics, Phylogeny, and Distribution of Acer (maples) in the Cenozoic of Western North America. Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and Mineralogy 22(1): 1–246.  PDF Reference page. 

Additional references

• Manchester, S.R. & McIntosh, W.C. 2007. Late Eocene silicified fruits and seeds from the John Day Formation near Post, Oregon. PaleoBios 27(1): 7–17.  ResearchGateReference page. 

Links

• IFPNI International Editorial Board 2014–2026. The International Fossil Plant Names Index. Acer postense. Published online. Accessed: 2026 January 16.