UCMP V-99563 (Miocene to of the United States)

Also known as 45/1 site, Monocline Ridge assemblage (non-marine)

Where: Fresno County, California (36.5° N, 120.6° W: paleocoordinates 35.8° N, 115.9° W)

• coordinate estimated from map

When: Temblor Formation, Early/Lower Barstovian to Early/Lower Barstovian (16.0 - 13.6 Ma)

Environment/lithology: terrestrial; sandstone

Size class: macrofossils

Reposited in the UCMP

Collection methods: bulk, quarrying, surface (in situ), sieve

• From Zaborsky 2004: "The entire length of the bonebed was divided into one (1) meter segments (approximately 3.3’), numbered from west to east. Because initial testing of the bonebed indicated that it was more than a meter wide in some places, each meter segment of length was divided into a northeast square meter ‘A’ and a southwest square meter ‘B’.

•Probing of fill at the east end of the pad revealed the original east edge of the hill, as indicated by buried rooted vegetation. Systematic excavation of the bonebed began at that end and proceeded westward. The original plan was fashioned in the manner of excavations typical of fairly flat-lying strata. The 6” (15.2 cm) depth would be excavated in three 2” (5.1 cm) deep intervals. Many of the larger bones penetrated all three artificial intervals because of the dip of the strata, and that approach soon was found to be infeasible. The more natural approach was to work through bedding planes, and thus excavation of a square meter was executed from north to south or vice-versa. Positions of identifiable fossils were mapped, one meter square per page. Orientations of long bones and flat bones were determined with a Brunton compass and recorded. Well- defined stratigraphic contacts, presence or absence of clay pebbles, and presence of caliche and opal were also recorded.

•Digital photographs were taken of important features and of excavated and swept quarry floors. Each identifiable fossil was assigned a number and placed in an appropriate container (plastic film canister, ziplock bag, etc.) with that number (Figure 3). Cyanoacrilate was the primary preservative used during the excavation. White glue was employed for hardening of some large and porous blocks of sediment. When dense

•accumulations of bones were encountered, they were removed in plaster jackets and later dismantled elsewhere in order to minimize the time spent on the pad. A gasoline- powered electric generator was employed to power a diamond saw and an air compressor and pneumatic jackhammer when necessary. The sediments excavated from each square were saved in plastic containers. Each container bore the number of the square, and these were set aside for future screening and picking."

Primary reference: T. S. Kelly and J. D. Stewart. 2008. New Records of Middle and Late Miocene Perissodactyla and Artiodactyla From the Western Border of the San Joaquin Valley, Diablo Range, Fresno County, California. Contributions to Science, Natural History Museum of Los Angeles County 516:1-29 [J. Marcot/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 156738: authorized by Jonathan Marcot, entered by Jonathan Marcot on 30.05.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes
 Salientia -
Reptilia
 Testudines - Pantestudinidae
Hesperotestudo sp. Williams 1950 turtle
Hesperotestudo sp. of the H. osborniana--orthopyga lineage
Aves
 Anseriformes - Anatidae
Anatidae indet. Vigors 1825 waterfowl
Branta cf. woolfendeni Bickart 1990 goose
 Ornithurae -
Passeriformes indet. Linnaeus 1758 perching bird
 Podicipediformes - Podicipedidae
Podicipedidae indet. Bonaparte 1831 grebe
Reptilia
 Squamata - Colubridae
Colubridae indet. Oppel 1811 colubrid snake
Masticophis or Coluber sp.
Mammalia
 Glires -
Rodentia "sp. indet. 1" rodent
Rodentia, two undet. spp.
Rodentia "sp. indet. 2" rodent
Rodentia, two undet. spp.
 Lagomorpha - Leporidae
Leporidae indet. Fischer de Waldheim 1817 rabbit
 Perissodactyla - Rhinocerotidae
cf. Peraceras sp. Cope 1880 rhinoceros
 Perissodactyla - Equidae
Merychippus cf. relictus Cope 1889 horse
Merychippus californicus Merriam 1915 horse
Merychippus brevidontus Bode 1935 horse
Desmatippus avus Marsh 1874 anchitheriine horse
Archaeohippus mourningi Merriam 1913 anchitheriine horse
 Carnivora - Amphicyonidae
Amphicyon ingens Matthew 1924 bear-dog
 Carnivora - Mustelidae
Legionarictis fortidens n. gen. n. sp., "Martes cf. glareae" = Plionictis ogygia
Legionarictis fortidens n. gen. n. sp. Tseng et al. 2009 mustelid carnivore
"Martes cf. glareae" = Plionictis ogygia Matthew 1901 mustelid carnivore
[entered as Martes glarea]
 Carnivora - Canidae
Borophaginae indet. Simpson 1945 bone-crushing dog
Microtomarctus conferta Matthew 1918 bone-crushing dog
 Carnivora - Felidae
Pseudaelurus marshi Thorpe 1922 cat
 Proboscidea -
Proboscidea indet. Illiger 1811 proboscidean
 Ungulata - Camelidae
Miolabis sp. Hay 1899 camel
 Ungulata - Antilocapridae
Antilocapridae indet. Gray 1866 pronghorn
Cosorycinae indet.