UCMP loc. P3318, Chalk Bluff (Eocene of the United States)

Where: Nevada County, California (39.2° N, 120.9° W: paleocoordinates 40.8° N, 106.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Middle Eocene (48.6 - 37.2 Ma)

• bed-level stratigraphic resolution

Environment/lithology: "floodplain"; brown claystone

Size class: macrofossils

Preservation: mold/impression, adpression, original carbon

Collection methods: surface (in situ),

Primary reference: H. D. MacGinitie. 1941. A Middle Eocene Flora from the Central Sierra Nevada. Carnegie Institution of Washington Publication 534:1-178 [H. Sims/H. Lindon/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 23998: authorized by Hallie Sims, entered by Heather Lindon on 26.07.2002, edited by Hallie Sims

Creative Commons license: CC BY (attribution)

Taxonomic list

Carpites
  -
Carpites egregia MacGinitie 1941
Phyllites
  -
Phyllites laurinea Lesquereux 1878
Phyllites daturaefolia MacGinitie 1941
Angiospermae
 Sapindales - Anacardiaceae
Rhus mixta Lesquereux 1878 sumac
 Sapindales - Sapindaceae
Cupania oregona Chaney and Sanborn 1933 soapberry
Thouinopsis myricaefolia Lesquereux 1878 soapberry
 Sapindales - Meliaceae
Cedrela eolancifolia n. sp. MacGinitie 1941 mahogany
 Sapindales - Burseraceae
Canarium californicum Lesquereux 1878
 Malpighiales - Euphorbiaceae
Acalypha aequalis MacGinitie 1941 spurge
Mallotus riparius MacGinitie 1941 spurge
 Fabales - Fabaceae
Pongamia ovata n. sp. MacGinitie 1941 legume
Strongylodon falcata MacGinitie 1941 legume
 Fagales - Fagaceae
Quercus nevadensis Lesquereux 1878 oak
Quercus distincta Lesquereux 1878 oak
Castanopsis longipetiolatum Knowlton 1899 chinquapin
 Fagales - Juglandaceae
Carya sessilis MacGinitie 1941 hickory
Engelhardtia nevadensis MacGinitie 1941
 Rosales - Rhamnaceae
Rhamnidium chaneyi Potbury 1935 buckthorn
Rhamnus plenus MacGinitie 1937 buckthorn
 Rosales - Rosaceae
Chrysobalanus eoicaco MacGinitie 1941 rose
 Rosales - Ulmaceae
Chaetoptelea pseudofulva Lesquereux 1878 elm
 Rosids - Moraceae
Ficus densifolia Knowlton 1899 fig
Dicotyledoneae
 Ericales - Ebenaceae
Diospyros retinervis MacGinitie 1941
 Ericales - Theaceae
Gordonia egregia Lesquereux 1878 tea
 Myrtales - Combretaceae
Terminalia estamina MacGinitie 1941
Angiospermae
 Magnoliales - Magnoliaceae
Magnolia dayana Cockerell 1910 magnolia
 Cornales - Nyssaceae
Nyssa californica MacGinitie 1941 tupelo
 Lamiales - Oleaceae
Fraxinus yubaensis n. sp. MacGinitie 1941 ash
 Icacinales - Icacinaceae
Phytocrene sordida Lesquereux 1878 white pear
 Saxifragales - Hamamelidaceae
Liquidambar californicum Lesquereux 1878 sweetgum
Hamamelites voyana Lesquereux 1878 witch-hazel
 Saxifragales - Cercidiphyllaceae
Cercidiphyllum elongatum Brown 1939 katsura
 Ranunculales - Menispermaceae
Hyperbaena diforma Potbury 1935
 Proteales - Platanaceae
"Platanophyllum whitneyi" = Macginitiea whitneyi, Platanus coloradensis, "Platanus appendiculata" = Platanus appendiculata, "Acer aequidentatum" = Platanus appendiculata
"Platanophyllum whitneyi" = Macginitiea whitneyi Lesquereux 1878
Platanus coloradensis Knowlton 1930 plane tree
"Platanus appendiculata" = Platanus appendiculata Lesquereux 1878 plane tree
"Acer aequidentatum" = Platanus appendiculata Lesquereux 1878 plane tree
 Liliales - Smilacaceae
Smilax labidurommae Cockerell 1914 greenbrier
 Laurales - Lauraceae
Persea pseudocarolinensis Lesquereux 1878 laurel
Persea praelingue Sanborn 1935 laurel
Cinnamomum dilleri Knowlton 1902 cinnamon
Cinnamomum acrodromum Potbury 1935 cinnamon
Laurophyllum fremontensis Berry 1930 laurel
Cryptocarya praesamarensis Sanborn 1935 laurel
 Bennettitales -
Zamites californica MacGinitie 1941