The Kilgore Flora (Miocene to of the United States)

Where: Cherry County County, Nebraska (42.0° N, 100.4° W: paleocoordinates 42.5° N, 97.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Valentine Formation (Ogallala Group), Barstovian to Barstovian (16.3 - 9.4 Ma)

• bed-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; unlithified, gray claystone

• the Valentine formation, the lowest member of theOgallala is made up almost entirely of fine gray calcareous sands, with a few horizons of cemented caliche sand. The Valentine rests on an erosion surface developed on rather well cemented sandy or silty clays, dark gray with a pinkish cast. The clay beds have been tentatively assigned to the "Brule Clays" of Oligocene age.

Size classes: macrofossils, microfossils

Preservation: original carbon

Collection methods: surface (in situ),

Primary reference: H. D. MacGinitie. 1962. The Kilgore Flora: A Late Miocene Flora from Northern Nebraska. University of California Publications in Geological Sciences 35(2):67-158 [H. Sims/H. Lindon/J. Cassara]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 23401: authorized by Hallie Sims, entered by Heather Lindon on 14.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Fungi indet., cf. Sarcobatus sp., Ambrosia sp.
Fungi indet. Jahn and Jahn 1959
Hexactinellida
 Lychniscosa - Camerospongiidae
Robinia lesquereuxi
Robinia lesquereuxi glass sponge
(Ettingshausen) MacGinitie
Algae
 Algae -
"Algae" indet.
"Algae" indet.
Algal spores
Polypodiopsida
  - Polypodiaceae
Polypodiaceae indet.
Polypodiaceae indet. Presl and Presl 1822
Lycopodiopsida
 Lycopodiales - Lycopodiaceae
Lycopodium sp.
Lycopodium sp. Linnaeus 1753 ground pine
Pinopsida
 Pinales - Pinaceae
Pinus spp., Picea sp.
Pinus spp. Linnaeus 1753 pine
Picea sp. Dietrich 1824 spruce
 Coniferales - Cupressaceae
cf. Sequoia sp., Chamaecyparis linguaefolia
cf. Sequoia sp. Endlicher 1847 coast redwood
Angiospermae
  -
"Monocotyledonae indet." = Monocotyledoneae
"Monocotyledonae indet." = Monocotyledoneae
Dicotyledoneae
 Ericales - Ebenaceae
Diospyros miotexana n. sp.
 Myrtales - Onagraceae
Onagraceae indet.
Onagraceae indet. de Jussieu 1789 willowherb
Angiospermae
 Poales - Cyperaceae
Cyperaceae spp.
Cyperaceae spp. Jussieu 1789 sedge
 Poales - Poaceae
"Gramineae spp." = Poaceae
"Gramineae spp." = Poaceae Barnhart 1895 true grass
 Saxifragales - Grossulariaceae
Ribes infrequens n. sp.
Ribes infrequens n. sp. currant
 Saxifragales - Hamamelidaceae
Liquidambar sp.
Liquidambar sp. Linnaeus 1753 sweetgum
 Cornales - Nyssaceae
Nyssa copeana
Nyssa copeana tupelo
(Lesquereux) Chaney and Axelrod
 Asterales - Asteraceae
Artemisia sp., "Compositae spp." = Asteraceae
Artemisia sp. Linnaeus 1753 daisy
"Compositae spp." = Asteraceae Berchtold and Presl 1820 daisy
 Aquifoliales - Aquifoliaceae
Ilex sp.
Ilex sp. Linnaeus 1753 holly
 Lamiales - Oleaceae
Fraxinus coulteri
 Boraginales - Boraginaceae
Cordia prealba n. sp.
Cordia prealba n. sp. borage
 Proteales - Sabiaceae
Meliosma predentata n. sp., Meliosma sp.
Meliosma sp. Blume 1823
 Proteales - Platanaceae
Platanus vitifolia n. sp.
Platanus vitifolia n. sp. plane tree
 Ranunculales - Berberidaceae
Mahonia marginata
Mahonia marginata barberry
(Lesquereux) Arnold
 Ranunculales - Menispermaceae
Cocculus rotunda n. sp.
 Rosales - Ulmaceae
cf. Ulmus sp., Ulmus speciosa, Celtis sp., Celtis kansana
cf. Ulmus sp. Linnaeus 1753 elm
Ulmus speciosa Newberry 1883 elm
Newberry
Celtis sp. Linnaeus 1753 hackberry
Celtis kansana Chaney and Elias 1936 hackberry
Chaney and Elias
 Rosales - Pomaceae
Crataegus nupta
Crataegus nupta hawthorn
(Cockerell) MacGinitie
 Rosales - Rosaceae
Prunus acuminata n. sp.
Prunus acuminata n. sp. plum
 Malpighiales - Salicaceae
Populus gallowayi n. sp., Populus washoensis, Populus crassa, Salix sp.
Populus gallowayi n. sp. poplar
Populus washoensis poplar
Brown
Populus crassa Lesquereux 1883 poplar
(Lesquereux) Cockerell
Salix sp. Linnaeus 1753 willow
 Fagales - Juglandaceae
Juglans sp., Carya libbeyi, Carya spp., Pterocarya oregoniana, Pterocarya sp.
Juglans sp. Linnaeus 1753 walnut
Carya libbeyi hickory
(Lesquereux) MacGinitie
Carya spp. Nuttall 1818 hickory
Pterocarya oregoniana wingnut
Chaney
Pterocarya sp. Kunth 1824 wingnut
 Fagales - Fagaceae
Quercus parvula n. sp., Quercus preturbinella n. sp., Quercus remingtoni, Quercus spp., Quercus argentum
Quercus parvula n. sp. oak
Quercus remingtoni oak
Condit
Quercus spp. Linnaeus 1753 oak
Quercus argentum Knowlton 1901 oak
Knowlton
 Fagales - Betulaceae
cf. Betula sp., Alnus sp.
cf. Betula sp. Linnaeus 1753 birch
Alnus sp. Miller 1754 alder
 Fabales - Fabaceae
Cladrastis prelutea n. sp.
Cladrastis prelutea n. sp. yellowwood
 Sapindales - Sapindaceae
Acer sp., Acer minor
Acer sp. Linnaeus 1753 maple
Acer minor Knowlton 1902 maple
Knowlton
 Sapindales - Meliaceae
Cedrela trainii, Cedrela sp.
Cedrela trainii mahogany
Arnold
Cedrela sp. Browne 1756 mahogany
 Malvales - Tiliaceae
Tilia sp.
Tilia sp. Linnaeus 1753 linden
 Vitales - Vitaceae
Vitis pannosa n. sp.
Vitis pannosa n. sp. grapevine