NE section 19, Calico Hills (Miocene of the United States)

Where: California (35.0° N, 116.8° W: paleocoordinates 34.1° N, 111.2° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Calico Member (Barstow Formation), Hemingfordian (20.4 - 16.0 Ma)

• 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.

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified, nodular, brown shale

• Laminated brown-weathering shale including four beds of nodules

Size classes: macrofossils, mesofossils

Preservation: replaced with calcite, replaced with silica, replaced with other

Reposited in the LACM

Primary reference: W. D. Pierce. 1966. Fossil arthropods of California 29. Silicified Miocene pupae of ceratopogonid flies. Bulletin of the Southern California Academy of Sciences 65:81-98 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 152222: authorized by Matthew Clapham, entered by Matthew Clapham on 11.11.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Insecta
 Diptera - Ceratopogonidae
Dasyhelea dara, Dasyhelea antiqua, Dasyhelea judithae, Dasyhelea stenoceras, Dasyhelea kanakoffi, Dasyhelea browneae, "Neopalpomyia freyi" = Palpomyia freyi, "Parapalpomyia ryshkoffi" = Palpomyia ryshkoffi, Culicoides megacanthus, Johannsenomyia hotchkissae, "Culicoides miocenea" = Culicoides mioceneus
Dasyhelea dara Pierce 1966 biting midge
Not including specimen known to come from site 3A
Dasyhelea antiqua Palmer 1957 biting midge
Dasyhelea judithae Pierce 1966 biting midge
Not including specimen known to come from LACMIP 357
Dasyhelea stenoceras Palmer 1957 biting midge
Dasyhelea kanakoffi Pierce 1966 biting midge
Dasyhelea browneae Pierce 1966 biting midge
"Neopalpomyia freyi" = Palpomyia freyi Pierce 1966 biting midge
"Parapalpomyia ryshkoffi" = Palpomyia ryshkoffi Pierce 1966 biting midge
Culicoides megacanthus Palmer 1957 biting midge
Johannsenomyia hotchkissae Pierce 1966 biting midge
Not including specimen known to come from site 10
"Culicoides miocenea" = Culicoides mioceneus Pierce 1966 biting midge
Not including specimen known to come from LACMIP 365