Pyramid Flora: Middle Miocene, Nevada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Pinopsida
- Pinales
- Pinaceae
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Pinus ponderosoides multi organs
|
32 | ||||||
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Tsuga mertensioides seed/fruit
|
1 | ||||||
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Abies laticarpus leaf
|
9 | ||||||
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Pseudotsuga sonomensis multi organs
|
2 | ||||||
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Picea sonomensis seed/fruit
|
1 | ||||||
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Coniferales
- Cupressaceae
|
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Calocedrus masonii multi organs
|
4 | ||||||
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Taxodium oregonensis leaf
|
27 | ||||||
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Angiospermae
- Ericales
- Ericaceae
|
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Arbutus idahoensis leaf
|
5 | ||||||
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Arbutus matthesii leaf
|
2 | ||||||
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Angiospermae
- Sapindales
- Sapindaceae
|
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Aesculus preglabra leaf
|
34 | ||||||
|
Acer chaneyii multi organs
|
46 | ||||||
|
Acer negundoides leaf
MacGinitie 1933
|
1 | ||||||
|
Acer septilobatum leaf
Oliver 1934
|
1 | ||||||
|
Acer oregonianum multi organs
Knowlton 1902
|
21 | ||||||
|
Acer scottiae leaf
MacGinitie 1933
|
3 | ||||||
|
Acer glabroides leaf
Brown 1937
|
11 | ||||||
|
Angiospermae
- Rosales
- Papilionaceae
|
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Sophora spokanensis leaf
Knowlton 1926
|
1 | ||||||
|
Angiospermae
- Rosales
- Rosaceae
|
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Cercocarpus ovatifolius leaf
|
2 | ||||||
|
Prunus chaneyii leaf
|
12 | ||||||
|
Rosa schornii leaf
|
3 | ||||||
|
Angiospermae
- Rosales
- Pomaceae
|
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|
Sorbus macjannetii leaf
|
3 | ||||||
|
Angiospermae
- Fagales
- Juglandaceae
|
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Pterocarya mixta leaf
|
2 | ||||||
|
Angiospermae
- Fagales
- Fagaceae
|
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|
Quercus simulata leaf, seed/fruit
Knowlton 1898
|
378 | ||||||
|
Lithocarpus nevadensis leaf
|
26 | ||||||
|
Angiospermae
- Fagales
- Betulaceae
|
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|
Ostrya oregoniana leaf
|
2 | ||||||
|
Betula vera leaf
|
7 | ||||||
|
Betula ashleyii leaf
|
1 | ||||||
|
Betula thor leaf
Knowlton 1926
|
286 | ||||||
|
Alnus latahensis leaf, seed/fruit
|
242 | ||||||
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Alnus spokanensis leaf
|
161 | ||||||
|
Alnus pyramidensis leaf
|
6 | ||||||
|
Angiospermae
- Malpighiales
- Salicaceae
|
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|
Salix pelviga leaf
|
8 | ||||||
|
Salix churchillensis leaf
|
5 | ||||||
|
Salix boisiensis leaf
Smith 1941
|
1 | ||||||
|
Salix inquirenda leaf
Knowlton 1926
|
2 | ||||||
|
Populus bonhamii leaf
|
30 | ||||||
|
Angiospermae
- Lamiales
- Oleaceae
|
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|
Fraxinus caudata leaf
|
4 | ||||||
|
Osteolepiformes
- Chrysolepididae
|
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Chrysolepis sonomensis leaf
|
3 | ||||||
|
Angiospermae
- Saxifragales
- Grossulariaceae
|
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Ribes stanfordianum leaf
|
1 | ||||||
|
Angiospermae
- Proteales
- Platanaceae
|
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Platanus bendirei leaf
(Lesquereux 1888)
|
25 | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Nevada | County: | Washoe |
| Coordinates: | 39.9° North, 119.6° West (view map) | ||||
| Paleocoordinates: | 40.6° North, 116.7° West | ||||
| Basis of coordinate: | estimated from map |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| *Period: | Middle - Late/Upper Tertiary - Middle - Late/Upper Tertiary | *Epoch: | Middle Miocene - Middle Miocene |
| Key time interval: | Middle Miocene | ||
| Age range of interval: | 15.98 - 11.63 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Pyramid |
Lithology and environment
| Primary lithology: | poorly lithified "siliciclastic" |
| Includes fossils? | Y |
| Lithology description: Diatomite with fossil plants. Occasional thin sandstone and shale beds derived from nearby plugs also occasional reworked rhyolitic and lacite-dacite plugs. | |
| Environment: | lacustrine indet. |
Taphonomy
| Modes of preservation: | cast,mold/impression |
| Size of fossils: | macrofossils |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | selective quarrying,mechanical,field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 27700 | ||
| Authorizer: | B. Tiffney | Enterer: | M. Sherwood, J. Fosdick |
| Modifier: | B. Tiffney | Research group: | paleobotany |
| Created: | 2002-12-18 09:43:11 | Last modified: | 2004-02-23 14:06:22 |
| Access level: | database members | Released: | 2002-12-18 09:43:11 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 7612. | D.I. Axelrod. 1992. The Middle Miocene Pyramid Flora of Western Nevada. University of California Publications in Geological Sciences 137:1-50 [B. Tiffney/M. Sherwood/M. Sherwood] |
Secondary references:
| 8381 | D. R. Crabtree. 1987. Angiosperms of the Northern Rocky Mountains: Albian to Campanian (Cretaceous) megafossil floras. Annals of the Missouri Botanical Garden 74:707-747 [B. Tiffney/J. Fosdick/J. Fosdick] |