Northern Montezuma Range, Campito Fm., Nevadella zone, section MN-h 213.5: Montezuman, Nevada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita - Redlichiida - Holmiidae
Montezumaspis parallela (Fritz 1995)
original and current combination Palmettaspis parallela
Montezumaspis cometes (Fritz 1995)
see common names

Geography
Country:United States State/province:Nevada County:Esmeralda
Coordinates: 37.7° North, 117.3° West (view map)
Paleocoordinates:3.5° South, 96.9° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Cambrian Epoch:Series 2
Stage:Stage 3 10 m.y. bin:Cambrian 2
Key time interval:Montezuman Zone: Nevadella
Age range of interval:519.90000 - 514.80000 m.y. ago
Stratigraphy
Formation:Campito Member:Montenegro
Local section:MN-h Local bed:213.5
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: At the base of the middle Montezuman Stage.
Lithology and environment
Primary lithology: siltstone
Secondary lithology: sandstone
Lithology description: siltstone and fine sandstone
Environment:deep subtidal indet.
Geology comments: Holmiid specimens comprise 60% of the trilobite fauna from 170 to 215 m in the composite Montezuma Range section (Fig. 5) increasing to 75% for the interval from 215 m to the top of the Montenegro, with nevadiids making up the rest of the trilobite fauna. This constitutes the holmiid-dominated biofacies which occurs in a relatively deep subtidal and dysaerobic mud bottom.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Metadata
Database number:140504
Authorizer:W. Kiessling Enterer:M. Krause
Modifier:M. Krause Research group:marine invertebrate
Created:2013-03-11 20:19:33 Last modified:2013-03-13 05:21:19
Access level:authorizer only Released:2013-06-11 20:19:33
Creative Commons license:CC BY
Reference information

Primary reference:
45528. J. S. Hollingsworth. 2006. Holmiidae (Trilobita: Olenellina) of the Montezuman Stage (Early Cambrian) in Western Nevada. Journal of Paleontology 80(2):309-332 [W. Kiessling/M. Krause]