Acer osmonti

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: Acer sect. Macrophylla
Species:†Acer osmonti

Name

Acer osmonti Knowlton Bull. U.S. Geol. Surv., (204): 72. Dec 1902

Type material

• Holotype: UCMP 2505 (fruit)
  • Repository: Museum of Paleontology, University of California Berkeley, Berkeley, Alameda County, California, Unites States

• Paratypes: UCMP 9129, 9134, 9137, 9140, 9144, 9145, 9147-9149 (leaves) 9127, 9128, 9130-9133, 9135, 9136, 9138, 9139, 9141-9143, 9146, 9150
  • Repository: Museum of Paleontology, University of California Berkeley, Berkeley, Alameda County, California, Unites States

• Paratypes: USNM 396152, 396154, 396155, 396157-396159 (leaves) 396153, 396156 (fruits)
  • Repository: United States National Museum, Smithsonian Institution, National Mall, Washington DC, United States

• Paratype: UOCM (2 unnumbered) (fruits)
  • Repository: Museum of Natural and Cultural History, University of Oregon, Eugene, Lane County, Oregon, United States

Type locality

• Eocene, Late Eocene; Challis Volcanics, Salmon Flora; Salmon (USGS 8173), Lemhi County, Idaho, United States

Etymology

• "Knowlton named A. osmonti for the original collector, V. C. Osmont"

Distribution

Oligocene

• Rupelian
  • Bridge Creek Flora, John Day Formation; Allen Ranch (UCMP 3741, USGS 8641, USGS 11531), Clackamas County Oregon, United States
  • Bridge Creek Flora, John Day Formation; Clarno NE (UCMP 132), Clackamas County Oregon, United States
  • Bridge Creek Flora, John Day Formation; Kennedy Ranch (USGS 9422), Clackamas County Oregon, United States
  • Bridge Creek Flora, John Day Formation; Knox Ranch (USGS 9440), Clackamas County Oregon, United States
  • Bridge Creek Flora, John Day Formation; Nichol Spring (Ashwill F·5), Clackamas County Oregon, United States
  • Bridge Creek Flora, John Day Formation; Twickernham III (UCMP P5603), Twickenham County, Oregon, United States
  • Bridge Creek Flora, John Day Formation; Fossil (USGS 9420, UCMP PA-15, UCMP P5203), Wheeler County, Oregon, United States
  • Bridge Creek Flora, John Day Formation; Dugout Gulch (UCMP P4210, OMSI241), Wheeler County Oregon, United States
  • Bridge Creek flora, John Day Formation; Dugout Gulch-Pentecost Ranch I (Slanting Leaf Beds) (UCMP P4210, OMSI 240), Wheeler County, Oregon, United States
  • Bridge Creek flora, John Day Formation; Dugout Gulch-Pentecost Ranch II (UCMP PA-2, OMSI 246), Wheeler County, Oregon, United States
  • Bridge Creek Flora, John Day Formation; Summer Spring (Ashwill F-I), Wheeler County, Oregon, United States
  • Bridge Creek flora, John Day Formation; Wood Hollow (Ashwill F-43), Wheeler County, Oregon, United States
• Early Oligocene
  • Lyons Flora; Lyons (USGS 9351, UCMP PA487), Linn County, Oregon, United States
• Oligocene
  • ?, Gumboot Mountain Flora; Gumboot Mountain (UCMP PA399), Skamania County, Washington, United States

References

Primary references

• Knowlton, F.H. (1902). "Fossil flora of the John Day Basin, Oregon". Bulletin of the United States Geological Survey. C, Systematic Geology and Paleontology. Vol. 58 (204). pp. 1–153, pl. 1–17. doi:10.3133/b204. Reference page. 
• 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. 

Links

• IFPNI International Editorial Board 2014–2026. The International Fossil Plant Names Index. Acer salmonense. Published online. Accessed: 2026 Jan 04.