Spigot-Bottle
Basic information
Sample name: Spigot-Bottle
Reference: J. D. Archibald, Y. Zhang, T. Harper, and R. L. Cifelli. 2011. Protungulatum, confirmed Cretaceous occurrence of an otherwise Paleocene eutherian (placental?) Mammal. Journal of Mammalian Evolution 18:153-161 [ER 4121]
Geography
Country: United States
State: Montana
County: Carter
Coordinate: 45.87° N, -104.90° W
Coordinate basis: estimated from map
Formation: Hell Creek
Time interval: Maastrichtian
Zone: Lancian
Max Ma: 68.178
Min Ma: 66.38
Age basis: paleomag
Geography comments: show in Fig. 1a as approximately within sec. 4, T1N, R56E
"about 61 m below the Hell Creek-Fort Union formational contact... Spigot-Bottle is within the Toe Bone Channelbelt... The C30n/C29r paleomagnetic reversal is about 10 m above the channel capping" (age assignment is for C30n and is based on Ogg 2020)
"about 61 m below the Hell Creek-Fort Union formational contact... Spigot-Bottle is within the Toe Bone Channelbelt... The C30n/C29r paleomagnetic reversal is about 10 m above the channel capping" (age assignment is for C30n and is based on Ogg 2020)
Environment
Lithology: sandstone
Taphonomic context: fluvial deposit
Habitat comments: showni n Fig. 1B as immediately adjacent to or just within a cross-bedded facies well within what appears to be a sandstone unit, indicating that this is a channel sandstone
Methods
Life forms: ungulates,other small mammals
Sampling methods: screenwash
Sample size: 1099 specimens
Museum: UCMP, OMNH
Sampling comments: "discovered in the 1980s and 90s by field expeditions led by the first author... This material was catalogued into the University of California Museum of Paleontology (UCMP)... The fourth author led expeditions that collected many additional specimens... catalogued into the Oklahoma Museum of Natural History (OMNH)... samples were collected in situ and screen-washed in screens used solely for Late Cretaceous sediments"
the exact site was discovered by Walter Coombs
the exact site was discovered by Walter Coombs
Metadata
Sample number: 4558
Contributor: John Alroy
Enterer: John Alroy
Created: 2024-12-04 10:42:41
Modified: 2024-12-04 10:42:41
Abundance distribution
33 species
3 singletons
total count 1099
geometric series index: 41.5
Fisher's α: 6.407
geometric series k: 0.8417
Hurlbert's PIE: 0.8713
Shannon's H: 2.5257
Good's u: 0.9973
Each square represents a species. Square sizes are proportional to counts.
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Register
| †Mesodma hensleighi | 56 | |
| †Mesodma formosa | 225 | |
| †Mesodma thompsoni | 248 | |
| †Cimolodon nitidus | 27 | |
| Cimolodon sp. | 15 | |
| said to be new | ||
| †Cimolomys gracilis | 13 | |
| †Meniscoessus robustus | 87 | |
| †Essonodon browni | 6 | |
| †Pediomys elegans | 161 | |
| †Leptalestes cooki | 40 | |
| †Leptalestes krejcii | 27 | |
| †Protolambda hatcheri | 32 | |
| †Protolambda florencae | 15 | |
| †Alphadon marshi | 16 | |
| †Alphadon wilsoni | 5 | |
| †Nortedelphys magnus | 7 | |
| †Nortedelphys intermedius | 13 | |
| †Nortedelphys minimus | 3 | |
| Albertatherium foxi | 4 | |
| apparently a nomen nudum | ||
| †Turgidodon rhaister | 17 | |
| †Didelphodon vorax | 21 | |
| †Protalphadon lulli | 6 | |
| Metatheria indet. A | 1 | |
| Metatheria indet. B | 1 | |
| †Glasbius intricatus | 5 | |
| †Gypsonictops illuminatus | 6 | |
| †Gypsonictops cf. hypoconus | 4 | |
| presumably a different but similar species | ||
| Paranyctoides sp. | 2 | |
| said to be new | ||
| †Cimolestes incisus | 16 | |
| †Cimolestes propalaeoryctes | 12 | |
| †Cimolestes stirtoni | 3 | |
| †Batodon tenuis | 4 | |
| †Protungulatum coombsi | 1 | |
| type | ||