Marble Mountains, near Cadiz (coll. Bradley and Mason 1934): Delamaran, California
collected by John H. Bradley and John F. Mason 1934

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Coeloscleritophora - Chancelloriida - Chancelloriidae
Chancelloria eros Walcott 1920
Lingulata - Lingulida - Obolidae
Westonia ella Walcott 1912
Paterinata - Paterinida - Paterinidae
Iphidella pannula (White 1874)
recombined as Dictyonina pannula
Rhynchonellata - Orthida - Bohemiellidae
Billingsella highlandensis (Walcott 1886)
recombined as Wimanella highlandensis
Hyolithida - Hyolithidae
Hyolithes sp. d'Eichwald 1840
Hyolithes princeps Billings 1872
recombined as Nevadotheca princeps
Trilobita - Corynexochida - Corynexochidae
Corynexochus ? sp. Angelin 1854
Trilobita - Corynexochida - Dorypygidae
Dorypyge quadriceps (Hall and Whitfield 1877)
recombined as Kootenia quadriceps
Trilobita - Corynexochida - Zacanthoididae
Zacanthoides typicalis (Walcott 1886)
Trilobita - Corynexochida - Dolichometopidae
Bathyuriscus maximus n. sp. Mason 1935
Dolichometopus productus (Hall and Whitfield 1877)
    = Glossopleura mohavensis Resser 1935
Foster 2022
Bathyuriscus howelli Walcott 1886
recombined as Athabaskia howelli
Anoria lodensis (Clark 1921)
recombined as Glossopleura lodensis
Trilobita - Asaphida - Anomocarellidae
Anomocarella ? spatha Mason 1935
Trilobita - Ptychopariida - Ptychopariidae
Acrocephalites ? trifossatus Mason 1935
recombined as Caborcella trifossatus
Trilobita - Ptychopariida - Alokistocaridae
Amecephalus strangulatus n. sp. Mason 1935
Amecephalus piochensis (Walcott 1886)
Trilobita - Ptychopariida - Bolaspididae
Alokistocare linnarssoni (Walcott 1884)
recombined as Eldoradia linnarssoni
Agnostida - Eodiscidae
Pagetia clytia Walcott 1916
see common names

Geography
Country:United States State/province:California County:San Bernardino
Coordinates: 34.5° North, 115.5° West (view map)
Paleocoordinates:2.1° South, 96.9° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Cambrian
10 m.y. bin:Cambrian 3
Key time interval:Delamaran
Age range of interval:511.00000 - 506.50000 m.y. ago
Stratigraphy
Formation:Cadiz
Stratigraphic resolution:formation
Stratigraphy comments: The stratigraphy of the formation has been fully dealt with in the reports of Hazzard and Hazzard and Mason. As established in the latter, the Cadiz formation consists of the upper 375 feet of the quartzite and shale unit originally noted as containing both Lower and Middle Cambrian fossils. The lower 100 feet of the unit as originally described is not included within the Cadiz formation as it is known to contain Mesonacidae. The exact contact between the Lower and Middle Cambrian beds has not been determined, but it is placed provisionally, at a buff, oolitic limestone and limy, glauconitic sandstone horizon about 100 feet above the top of the Lower Cambrian algal limestone. The fossils of the present report came from a thin-bedded limestone which weathers into small buff- colored blocks and plates, and from an underlying green shale. The thin-bedded limestone is immediately overlain by the heavy, dark gray limestone of the Bonanza King formation (Middle Cambrian). The green shale is probably not more than 50 feet lower in the formation. PJW: The Brisolia zone is now the Latham Shale

JDM: The "thin-bedded limestone" is the Middle Cambrian Cadiz Formation, green shale is the Dyeran Latham Shale.
Lithology and environment
Primary lithology: "limestone"
Secondary lithology:green "shale"
Includes fossils?Y
Lithology description: The stratigraphy of the formation has been fully dealt with in the reports of Hazzard7 and Hazzard and Mason.8 As established in the latter, the Cadiz formation consists of the upper 375 feet of the quartzite and shale unit originally noted as containing both Lower and Middle Cambrian fossils. The lower 100 feet of the unit as originally described is not included within the Cadiz formation as it is known to contain Mesonacidae. The exact contact between the Lower and Middle Cambrian beds has not been determined, but it is placed provisionally, at a buff, oolitic limestone and limy, glauconitic sandstone horizon about 100 feet above the top of the Lower Cambrian algal limestone. The fossils of the present report came from a thin-bedded limestone which weathers into small buff- colored blocks and plates, and from an underlying green shale. The thin-bedded limestone is immediately overlain by the heavy, dark gray limestone of the Bonanza King formation (Middle Cambrian). The green shale is probably not more than 50 feet lower in the formation.
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Collectors:John H. Bradley and John F. Mason Collection dates:1934
Metadata
Database number:191414
Authorizer:J. Marcot Enterer:J. Marcot
Modifier:J. Marcot Research group:marine invertebrate
Created:2018-01-28 19:36:05 Last modified:2023-04-04 17:40:53
Access level:the public Released:2018-01-28 19:36:05
Creative Commons license:CC BY
Reference information

Primary reference:
64594. J. F. Mason. 1935. Fauna of the Cambrian Cadiz Formation, Marble Mountains, California. Bulletin of the Southern California Academy of Sciences 34(2):97-120 [J. Marcot/J. Marcot]

Secondary references:

84267 J. R. Foster. 2022. Continuous character variation within the Glossopleura-Anoria-Sonoraspis plexus: Dolichometopid trilobites from the Cadiz Formation (Cambrian: Miaolingian, Wuliuan), California. Palaeontologia Electronica 25(2):a18 [J. Marcot/J. Marcot]