PBDB Collection

Aldrich Hill (Miocene of the United States)

Also known as UCMP P3916

Where: Mineral County, Nevada (38.5° N, 118.9° W: paleocoordinates 39.1° N, 116.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Aldrich Station Formation, Early/Lower Clarendonian (12.5 - 9.4 Ma)

• bed-level stratigraphic resolution

Environment/lithology: lacustrine; lithified shale

• Tan to light grey siliceous shales, thinly bedded, locally becoming paper-thin shales, weathering to cream and white chips. Several 5- to 10-ft, red-brown, punky, organic clay-shales interbedded

Size class: macrofossils

Preservation: mold/impression, adpression, original carbon

Reposited in the UCMP

Collection methods: quarrying,

Primary reference: D. I. Axelrod. 1956. Mio-Pliocene floras from west-central Nevada. University of California Publications in Geological Sciences 33:1-321 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 27659: authorized by Bruce Tiffney, entered by Bruce Tiffney on 17.12.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Symphoricarpos wassukana n. sp. Symphoricarpos wassukana n. sp.
Polypodiopsida
Equisetales - Equisetidae	Equisetum alexanderi Equisetum alexanderi horsetail
Pinopsida
Pinales - Pinaceae	Pinus wheeleri, Pinus florissanti, Abies concoloroides, Tsuga sonomensis, Pseudotsuga sonomensis, Picea sonomensis, Picea magna Pinus wheeleri Cockerell 1908 pine Pinus florissanti Lesquereux 1883 pine Abies concoloroides Brown 1940 fir Tsuga sonomensis Pseudotsuga sonomensis Picea sonomensis spruce Picea magna spruce

Coniferales - Cupressaceae	Sequoiadendron chaneyi n. sp., Thuja dimorpha Sequoiadendron chaneyi n. sp. cypress Thuja dimorpha cypress
Angiospermae
Fagales - Myricaceae	Comptonia parvifolia n. sp. Comptonia parvifolia n. sp.
Fagales - Fagaceae	Quercus hannibali, Quercus simulata Quercus hannibali oak Quercus simulata Knowlton 1898 oak
Fagales - Betulaceae	Alnus smithiana n. sp. Alnus smithiana n. sp. alder
Fabales - Fabaceae	Amorpha oblongifolia Amorpha oblongifolia Axelrod 1939 legume
Malpighiales - Salicaceae	Populus payettensis, Populus subwashoensis, Salix payettensis, Salix knowltoni Populus payettensis poplar Populus subwashoensis Axelrod 1956 poplar Salix payettensis willow Salix knowltoni willow
Rosales - Ulmaceae	Ulmus moorei, Zelkova nevadensis n. sp. Ulmus moorei elm Zelkova nevadensis n. sp. zelkova
Rosales - Pomaceae	Amelanchier apiculata Amelanchier apiculata shadbush
Rosales - Rosaceae	Cercocarpus antiquus Cercocarpus antiquus Lesquereux 1878 rose
Sapindales - Sapindaceae	Aesculus ashleyi n. sp. Aesculus ashleyi n. sp. soapberry
Dicotyledoneae
Ericales - Sapotaceae	Bumelia beaverana Bumelia beaverana
Angiospermae
Lamiales - Oleaceae	Fraxinus alcorni n. sp. Fraxinus alcorni n. sp. ash
Ranunculales - Berberidaceae	Mahonia marginata Mahonia marginata barberry