Calico Mountains Arthropod Beds (UA collection): Hemingfordian, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Reticulitermes tibalis
Banks 1920
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Collembola
- Entomobryomorpha
- Entomobryidae
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Entomobrya atrocincta
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Insecta
- Diptera
- Chironomidae
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Calopsectra sp.
Kieffer 1909
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Insecta
- Diptera
- Ceratopogonidae
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Dasyhelea antiqua
Palmer 1957
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Miopalpomyia sp.
Pierce 1966
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| synonym of Palpomyia | ||||||||||
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Johannsenomyia hotchkissae
Pierce 1966
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| nomen dubium belonging to Ceratopogoninae | ||||||||||
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Culicoides megacanthus
Palmer 1957
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Insecta
- Odonata
- Libellulidae
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Orthemis ferruginea
(Fabricius 1775)
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| plus two more unidentified libellulids | ||||||||||
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Insecta
- Psocodea
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Miotroctes sp.
Pierce 1960
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Insecta
- Coleoptera
- Staphylinidae
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Carpelimus sp.
Leach 1819
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Insecta
- Coleoptera
- Nitidulidae
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Cybocephalus sp.
Erichson 1844
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Insecta
- Coleoptera
- Dytiscidae
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Schistomerus californense
Palmer 1957
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Insecta
- Hymenoptera
- Formicidae
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Palaeosminthurus sp.
Pierce and Gibron 1962
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| synonym of Camponotus | ||||||||||
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Insecta
- Blattodea
- Kalotermitidae
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Cryptotermes sp.
Banks 1906
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Insecta
- Blattodea
- Termitidae
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Gnathotermes sp.
Holmgren 1912
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Insecta
- Blattodea
- Stylotermitidae
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Parastylotermes sp.
Snyder and Emerson 1949
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Insecta
- Thysanoptera
- Thripidae
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Anaphothrips (Proscritothrips) vitreus
O'Neill 1957
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Insecta
- Thysanoptera
- Melanthripidae
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Melanothrips sp.
(Haliday 1836)
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| original and current combination Melanthrips | ||||||||||
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Insecta
- Hemiptera
- Cicadellidae
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Euscelis sp.
Brullé 1832
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Insecta
- Hemiptera
- Notonectidae
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Notonectidae indet.
(Latreille 1802)
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| original and current combination Notonectariae | ||||||||||
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Insecta
- Hemiptera
- Saldidae
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Saldidae indet.
(Amyot and Audinet-Serville 1843)
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Insecta
- Hemiptera
- Rhyparochromidae
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Miogonates sp.
Sailer and Carvalho 1957
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Insecta
- Hemiptera
- Pachygronthidae
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Procymophyes sp.
Sailer and Carvalho 1957
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Branchiopoda
- Anostraca
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Anostraca indet.
Sars 1867
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Hexanauplia
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Cletocamptus sp.
Schmankevitch 1875
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Arachnida
- Araneae
- Lycosidae
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Lycosidae indet.
Sundevall 1833
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Arachnida
- Araneae
- Salticidae
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Dendryphantes sp.
Koch 1837
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Arachnida
- Araneae
- Dictynidae
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Argenna fossilis
Petrunkevitch 1957
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Arachnida
- Acariformes
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Protoarrenurus sp.
Cook 1957
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | California | County: | San Bernardino |
| Coordinates: | 35.0° North, 116.8° West (view map) | ||||
| Paleocoordinates: | 34.1° North, 111.3° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Burdigalian | 10 m.y. bin: | Cenozoic 5 |
| Key time interval: | Hemingfordian | ||
| Age range of interval: | 18.50000 - 16.30000 m.y. ago |
Stratigraphy
| Formation: | Barstow | Member: | Upper | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Overlying fine-grained lacustrine beds (here referred to as the Calico Member of the Barstow Formation) are bracketed between ca. 19 and 16.9 Ma, and are thus older than the type section of the Barstow Formation in the Mud Hills. Several 17.1-16.8 Ma calc-alkaline dacite domes intrude the Calico Member. | |||||
Lithology and environment
| Primary lithology: | planar lamination,concretionary lithified mudstone | ||
| Lithology description: "microlaminated mudstones" including the fossiliferous concretions | |||
| Environment: | lacustrine - large | Tectonic setting: | rift |
| Geology comments: "lake sediments" indicating an environment analogous to that seen in Mono Lake, Big Soda Lake, and Soap Lake | |||
Taphonomy
| Modes of preservation: | body,adpression,concretion |
| Lagerst�tten type: | conservation |
| Size of fossils: | mesofossils |
Collection methods and comments
| Collection methods: | bulk,chemical,acetic,field collection |
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: "Over 1000 concretions were collected and etched in a 10% acetic acid bath... residues were examined to identify and assess the relative anatomic preservation of fossils"
University of Arizona collection | |
Metadata
| Database number: | 106431 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | M. Clapham | Research group: | paleoentomology |
| Created: | 2011-03-15 12:13:28 | Last modified: | 2016-12-26 17:25:32 |
| Access level: | the public | Released: | 2011-03-15 12:13:28 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 35523. | L. E. Park and K. F. Downing. 2001. Paleoecology of an exceptionally preserved arthropod fauna from lake deposits of the Miocene Barstow Formation, Southern California, U.S.A. Palaios 16(2):175-184 [J. Alroy/J. Alroy] |