Dicotylophyllum trilobum

†Dicotylophyllum trilobum

†Dicotylophyllum trilobum from Brown, 1962

Taxonavigation

Taxonavigation: Magnoliopsida
Superregnum: Eukaryota Cladus: Diaphoretickes Cladus: CAM Cladus: Archaeplastida Regnum: Plantae Divisio: Tracheophyta Classis: Magnoliopsida

Ordo: Incertae sedis
Genus: †Dicotylophyllum
Species: †Dicotylophyllum trilobum

Name

†Dicotylophyllum trilobum (R.W.Br.) J.A.Wolfe & Tanai J. Fac. Sci. Hokkaido Univ., Ser. 4, Geol., 22(1): 210. Feb 1987

Synonyms

• Basionym
  • †Negundo triloba Newb., Ann. Lyceum Nat. Hist. New York, 9(Art. 1): 56. Apr 1868
    • †Negundo trilobum International Fossil Plant Names Index orth. var.
• Homotypic
  • †Acer triloba (Newb.) R.S.LaMotte, Mem. Geol. Soc. Amer., 51: 57. 20 Jun 1952
    • †Acer trilobum International Fossil Plant Names Index orth. var.
• Replaced synonym
  • †Acer newberryi R.W.Br., Profess. Pap. U.S. Geol. Surv., (375): 75. 31 Sep 1962
• Heterotypic
  • †Aralia triloba Newb., Ann. Lyceum Nat. Hist. New York, 9(Art. 1): 56. Apr 1868

Type material

• Lectotype: USNM P569 (leaf, Negundo triloba)
  • Repository: United States National Museum, Smithsonian Institution, National Mall, Washington DC, United States
• Lectotype: USNM P575 (leaf, Aralia triloba)
  • Repository: United States National Museum, Smithsonian Institution, National Mall, Washington DC, United States

Type locality

• Paleocene, Late Paleocene; Fort Union Formation; Yellowstone River left bank (USGS 2426), near Burns, Richland County, Montana, United States

Distribution

Paleocene

• Late Paleocene
  • Fort Union Formation; Yellowstone River left bank (USGS 2426), near Burns, Richland County, Montana, United States

References

Primary references

• Newberry, J.S. 1868. Notes on the later extinct floras of North America, with descriptions of some new species of fossil plants from the Cretaceous and Tertiary strata. Annals of the Lyceum of Natural History of New York 9(Art. 1): 1–76.  HathiTrust Reference page. 
• LaMotte, R.S. (1952). Catalogue of the Cenozoic plants of North America through 1950. Geological Society of America Memoirs. Vol. 51. Geological Society of America. pp. 1–378. doi:10.1130/MEM51.Reference page. 

• Brown, R.W. (1962). Paleocene Flora of the Rocky Mountains and Great Plains. Professional Paper. United States Geological Survey. pp. 1–119. doi:10.3133/pp375. 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. 
• Manchester, S.R. 2014. Revisions to Roland Brown's North American Paleocene flora. Acta Musei Nationalis Pragae, Series B – Historia Naturalis 70(3-4): 153–210. doi:10.14446/AMNP.2014.153. ISSN 0036-5343.  Reference page. 

Links

• IFPNI International Editorial Board 2014–2026. The International Fossil Plant Names Index. Negundo trilobum. Published online. Accessed: 2026 February 01.
• IFPNI International Editorial Board 2014–2026. The International Fossil Plant Names Index. Acer newberryi. Published online. Accessed: 2026 February 01.
• IFPNI International Editorial Board 2014–2026. The International Fossil Plant Names Index. Acer trilobum. Published online. Accessed: 2026 February 01.
• IFPNI International Editorial Board 2014–2026. The International Fossil Plant Names Index. Aralia triloba. Published online. Accessed: 2026 February 01.