Acer grahamense

†Acer grahamense

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
Section: incertae sedis
Species: †Acer grahamense

• Status:   nomen dubium  

Name

†Acer grahamense Knowlton & Cockerell, Bull. U.S. Geol. Surv., 1919, (696): 50. [13 Feb 1920]

Synonyms

• • †Acer grahamensis orth. var.
• Replaced synonym
  • †Acer macropterum nom. illeg.

Type material

• Lectotype: SMNH (unnumbered) (fruit)
  • Repository: Swedish Museum of Natural History, Stockholm, Sweden

Type locality

• Latest Eocene-Early Oligocene, Seldovian; Tyonek Formation, Kenai Group; Seldovia Point (USGS 9858); Seldovia Point, Cook Inlet, Kenai Peninsula Borough, Alaska, United States

Distribution

Latest Eocene-Early Oligocene

• Seldovian
  • Tyonek Formation, Kenai Group; Seldovia Point (USGS 9858); Seldovia Point, Cook Inlet, Kenai Peninsula Borough, Alaska, United States

References

Primary references

• Heer, O. 1869. Fossile Flora von Alaska (Flora fossilis Alaskana). Kongliga Svenska Vetenskaps-Akademiens Handlingar. Ny följd 8(4): [1]–41, pl. 1-10.  BHL Reference page. 
• Knowlton, F.H.; Cockerell, T.D.A. (1919). Knowlton, F.H. (ed.). A Catalogue of the Mesozoic and Cenozoic plants of North America. Bulletin of the United States Geological Survey. pp. 1–815. HathiTrustReference 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 grahamense. Published online. Accessed: 2026 January 23.