Roberts Mountain community (Devonian), Roberts Mountain Fm.: Lochkovian, Nevada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chlorophyceae - Dasycladales - Dasycladaceae
Verticillopora sp. Rezak 1959
Strophomenata - Strophomenida
Strophomenida indet. Opik 1934
indet. orthotetaceans
Strophomenata - Strophomenida - Leptaenoideidae
Leptaenisca sp. Beecher 1890
Strophomenata - Strophomenida - Amphistrophiidae
Mesodouvillina sp. Williams 1950
Strophomenata - Strophomenida - Strophonellidae
Strophonella sp. Hall 1879
Strophomenata - Strophomenida - Rafinesquinidae
Lepidoleptaena sp. Havlicek 1963
Leptaena sp. Dalman 1828
Strophomenata - Strophomenida - Leptostrophiidae
Leptostrophia sp. Hall and Clarke 1892
Strophomenata - Orthotetida - Schuchertellidae
Schuchertella sp. Girty 1904
Strophomenata - Orthotetida - Chilidiopsidae
Iridostrophia sp. (Havlicek 1965)
original and current combination Iridistrophia
originally entered as "Iridistrophia sp."
Strophomenata - Orthotetida - Areostrophiidae
Aesopomum sp. Havlicek 1965
originally entered as "Aesopmum sp."
Rhynchonellata - Atrypida - Septatrypidae
Dubaria sp.
synonym of Septatrypa
Rhynchonellata - Atrypida - Glassiidae
Cryptatrypa sp.
synonym of Glassia
2 species
Rhynchonellata - Atrypida - Atrypinidae
Spirigerina sp. d'Orbigny 1849
Atrypina sp. Hall and Clarke 1893
Rhynchonellata - Atrypida - Atrypidae
Atrypa sp. Dalman 1828
2 species
Sibirispira sp.
synonym of Spinatrypina
Rhynchonellata - Spiriferida - Ambocoeliidae
Metaplasia sp.
Rhynchonellata - Spiriferida - Delthyrididae
Howellella sp. Kozlowski 1946
Rhynchonellata - Spiriferida - Cyrtinopsidae
Megakozlowskiella sp. (Boucot 1957)
Rhynchonellata - Spiriferida - Reticulariidae
Undispirifer sp.
Rhynchonellata - Rhynchonellida - Hebetoechiidae
Hebetoechia sp.
2 species
Sphaerirhynchia sp. Cooper and Muir-Wood 1951
2 species
Rhynchonellata - Rhynchonellida - Glossinotoechiidae
Eoglossinotoechia sp.
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
Ancillotoechia sp. Havlicek 1959
Rhynchonellata - Spiriferinida - Cyrtinidae
Cyrtina sp. Davidson 1858
Rhynchonellata - Protorthida - Skenidiidae
Skenidioides sp. Schuchert and Cooper 1931
Rhynchonellata - Orthida - Hesperorthidae
Ptychopleurella sp. Schuchert and Cooper 1931
Rhynchonellata - Orthida - Schizophoriidae
Schizophoria sp. King 1850
3 species
Rhynchonellata - Orthida - Draboviidae
Salopina sp. Boucot 1960
Rhynchonellata - Orthida - Dalmanellidae
Resserella sp. Bancroft 1928
Protocortezorthis sp.
Tyersella sp.
Rhynchonellata - Orthida - Rhipidomellidae
Dalejina sp. Havlicek 1953
Rhynchonellata - Orthida - Dicoelosiidae
Dicoelosia sp. King 1850
Rhynchonellata - Pentamerida - Parastrophinidae
Anastrophia sp. Hall 1867
Rhynchonellata - Pentamerida - Gypidulidae
Gypidula sp. Hall 1867
3 species
Rhynchonellata - Athyridida - Nucleospiridae
Nucleospira sp. Hall 1859
Rhynchonellata - Athyridida - Meristellidae
Meristina sp. Hall 1867
Meristella sp.
Rhynchonellata - Athyridida - Rhynchospirinidae
Rhynchospirina sp. Schuchert and LeVene 1929
Conodonta
Conodonta indet.
4 genera, conodonts.
Anthozoa - Rugosa
Rugosa indet. Milne-Edwards and Haime 1850
chonophylloid coral
Anthozoa - Stauriida - Stereolasmatidae
Stereolasma sp. Simpson 1900
Anthozoa - Stauriida - Kyphophyllidae
Strombodes sp. Schweigger 1819
Anthozoa - Stauriida - Ptenophyllidae
? Australophyllum sp. Stumm 1949
originally entered as "? Australophyllum sp."
Anthozoa - Stauriida - Spongophyllidae
Spongophyllum sp. Milne-Edwards and Haime 1851
Anthozoa - Stauriida - Mucophyllidae
Mucophyllum sp. Etheridge 1894
Anthozoa - Stauriida - Pycnostylidae
Pycnostylus sp. Whiteaves 1884
Anthozoa - Favositida - Pachyporidae
Cladopora sp. Hall 1851
Anthozoa - Favositida - Favositidae
Favosites sp. Lamarck 1816
Anthozoa - Auloporida - Aulocystidae
Aulocystis sp. Schlüter 1885
Stromatoporoidea - Stromatoporoidea
Stromatoporoidea indet. Nicholson and Murie 1878
stromatoporoids
Stromatoporoidea - Actinostromatida - Actinostromatidae
Actinostroma sp. Nicholson 1886
see common names

Geography
Country:United States State/province:Nevada
Coordinates: 38.9° North, 117.9° West (view map)
Paleocoordinates:16.1° South, 63.6° West
Basis of coordinate:based on political unit
Geographic resolution:basin
Time
Period:Devonian Epoch:Early/Lower Devonian
Stage:Lochkovian 10 m.y. bin:Devonian 1
*Local age/stage:Gedinnian
Key time interval:Lochkovian Zone: hesperius
Age range of interval:419.20000 - 410.80000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Roberts Mountain
Stratigraphy comments: "Gedinnian (hesperius Conodont zone)"
Lithology and environment
Primary lithology: "limestone"
Environment:offshore shelf
Geology comments: "ls. outer shelf, overlain by skeletal buildup. BA5"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Taxonomic list comments:"Johnson, Boncot and Murphy, 1967. Johnson, 1974"
Metadata
Database number:590
Authorizer:J. Sepkoski Enterer:M. Sommers
Modifier:J. Ju Research group:marine invertebrate
Created:1999-03-25 18:05:01 Last modified:2017-01-04 16:23:27
Access level:the public Released:1999-03-25 18:05:01
Creative Commons license:CC BY
Reference information

Primary reference:
27289. J. G. Johnson. 1974. Early Devonian brachiopod biofacies of Western and Arctic North America. Journal of Paleontology 48(4):809-819 [A. Tomasovych/A. Tomasovych]

Secondary references:

60972 J. G. Johnson, A. J. Boucot, and M. A. Murphy. 1967. Lower Devonian faunal succession in central Nevada. Alberta Society of Petroleum Geologists 2:679 -691 [M. Uhen/J. Ju/M. Uhen]