Z-Line Quarry
Basic information
Sample name: Z-Line Quarry
Sample aka: UCMP V84193; UWBM C2366; ZLQ
Reference: S. M. Smith, C. J. Sprain, W. A. Clemens, D. L. Lofgren, P. R. Renne, and G. P. Wilson. 2018. Early mammalian recovery after the end-Cretaceous mass extinction: A high-resolution view from McGuire Creek area, Montana, USA. Geological Society of America Bulletin 130(11/12):2000-2014 [ER 4122]
Geography
Country: United States
State: Montana
County: McCone
Coordinate: 47.73° N, -106.23° W
Coordinate basis: estimated from map
Formation: Hell Creek
Time interval: Early Palaeocene
Zone: Puercan
Section: McGuire Creek
Unit number: 1
Unit order: below to above
Ma: 66.024
Age basis: Ar-Ar
Geography comments: coordinate estimated from the map in Fig. 1
immediately below the McGuire Creek basal Z (MCZ) coal that marks the Hell Creek/Fort Union contact
the MCZ coal is Ar-Ar dated in the study at 66.024 ± 0.014/0.044 Ma
immediately below the McGuire Creek basal Z (MCZ) coal that marks the Hell Creek/Fort Union contact
the MCZ coal is Ar-Ar dated in the study at 66.024 ± 0.014/0.044 Ma
Environment
Lithology: sandstone
Taphonomic context: fluvial deposit
Habitat comments: "Between the carbonaceous shale and the MCZ coal is the Z-Line channel deposit, containing both ZLQ and ZLE fossil localities, which are both near the base of the channel deposit and ~3 m below the MCZ coal but are ~12 m laterally apart from each other. The fossil-bearing horizon at ZLE is a ~12 cm thick, poorly sorted, brown to tan fine-grained sandstone that includes carbonaceous plant hash as well as vertebrate fossils. The fossil-bearing horizon at ZLQ is similar to that at ZLE"
the material is "isolated teeth and fragmentary jaws"
the material is "isolated teeth and fragmentary jaws"
Methods
Life forms: ungulates,other small mammals
Sampling methods: screenwash
Sample size: 31 specimens
Years: 2014 - 2016
Museum: UCMP, RAM, UWBM
Sampling comments: the McGuire Creek localities were all revisited by UWBM crews led by Smith and Wilson in 2014, 2015, and 2016 after having been collected by UCMP and Raymond M. Alf Museum of Paleontology (RAM) crews led by Lofgren "in the 1980s and early 1990s"
fossils were obtained by "surface collection and underwater screenwashing"
fossils were obtained by "surface collection and underwater screenwashing"
Metadata
Sample number: 4559
Contributor: John Alroy
Enterer: John Alroy
Modifier no: John Alroy
Created: 2024-12-05 06:22:35
Modified: 2024-12-05 10:07:25
Abundance distribution
5 species
0 singletons
total count 31
geometric series index: 6.8
Fisher's α: 1.687
geometric series k: 0.6389
Hurlbert's PIE: 0.6914
Shannon's H: 1.3639
Good's u: 1.0000
Each square represents a species. Square sizes are proportional to counts.
• Find matching samples
Register