Bonner quarry, Onyx Marble: Pliocene, Arizona
collected by Southwest Onyx and Marble Company

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Diplura - Projapygidae
Plioprojapyx primitivus n. gen., n. sp. Pierce 1951
Pierce 1951 1 specimen
LACM fossil insect collection BQ29
Diplura
Onychojapyx schmidti n. gen., n. sp. Pierce 1950
Pierce 1950 1 specimen
LACM fossil insect collection BQ2
Diplura - Campodeidae
Onychocampodea onychis n. gen., n. sp. Pierce 1951
Pierce 1951 1 specimen
LACM fossil insect collection BQ26
Insecta - Archaeognatha - Machilidae
Onychomachilis fisheri n. gen., n. sp. Pierce 1951
Pierce 1951 1 specimen
LACM fossil insect collection BQ7
Insecta - Phasmatodea
Calcibacunculus tenuis n. gen., n. sp. Pierce 1951
Pierce 1951 1 specimen
LACM fossil insect collection BQ25
unclassified
Onycholepisma arizonae n. gen., n. sp. Pierce 1951
Pierce 1951 1 specimen
LACM fossil insect collection BQ28
Myriapoda - Julida - Parajulidae
Parajulus onychis n. sp. Pierce 1951
Pierce 1951 1 specimen
LACM fossil insect collection BQ19
Myriapoda - Geophilomorpha
Calciphilus abboti n. gen., n. sp. Chamberlin 1949
Chamberlin 1949 1 specimen
SDSNH
Arachnida - Palpigradi
Paleokoenenia mordax n. gen., n. sp. Rowland and Sissom 1980
Rowland and Sissom 1980 17 specimens
SDSNH 16661-16677
Arachnida - Thelyphonida
Schizomida indet. Petrunkevitch 1945
Pierce 1951 2 specimens
LACM fossil insect collection BQ14, 27
Arachnida - Thelyphonida - Protoschizomidae
Onychothelyphonus bonneri n. gen., n. sp. Pierce 1950
Pierce 1950 1 specimen
LACM fossil insect collection BQ1
Arachnida - Thelyphonida - Calcitronidae
Calcitro fisheri n. gen., n. sp. Petrunkevitch 1945
6 specimens
YPM 17380, 17381; BQ8, 11, 13, 17 in Pierce, 1951
Arachnida - Thelyphonida - Hubbardiidae
Calcoschizomus latisternum n. gen., n. sp. Pierce 1951
Pierce 1951 1 specimen
LACM fossil insect collection BQ20
see common names

Geography
Country:United States State/province:Arizona
Coordinates: 35.1° North, 112.6° West (view map)
Paleocoordinates:35.3° North, 111.8° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Neogene Epoch:Pliocene
10 m.y. bin:Cenozoic 6
Key time interval:Pliocene
Age range of interval:5.33300 - 2.58000 m.y. ago
Stratigraphy
Formation:Onyx Marble
Stratigraphic resolution:group of beds
Stratigraphy comments: The onyx marble containing these specimens was mined from Bonner Quarry by members of the Southwest Onyx and Marble Company from faulted Middle Permian Supai formations on the side of a high angled fault. E. D. McKee was quoted by Petrunkevitch (1945) as stating: "The fault passes under and therefore, antedates basalt flows a few miles to the west and these are of a period I consider to be of Pliocene age. The age of the deposit is definitely 'post-faulting' which means since the middle of Cenozoic time, but deposition might have been any time from then to the present." Pierce (1951) gave an age of between 12 and 50 million years. Petrunkevitch (1955) dated other fossils found in this formation as "?Pliocene", which for lack of other information, we will follow here.
Lithology and environment
Primary lithology: lithified travertine
Environment:cave Tectonic setting:non-subsiding area
Geology comments: The nature of the structure of the onyx formation suggests that it was laid down by subterranean waters in fissures. Petrunkevitch (1945) suggested that the animals in the onyx were probably washed into the fissures from epigean habitats and became fossilized. Judging by the frail nature of palpigrades it is difficult to imagine specimens being washed in and remaining in the excellent condition of many of the specimens. It is more probable that these animals lived in close proximity to the area of deposition, which suggests that these palpigrades might have been cavernicoles.
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Museum repositories:LACM,YPM
Collectors:Southwest Onyx and Marble Company
Collection method comments: Repository: San Diego Natural History Museum. Petrunkevitch's specimens came from SDNHM originally but were placed in the YPM collection. Pierce's specimens came from J.W. Fisher, president of the Southwest Onyx and Marble Company, donated to LACM.
Metadata
Database number:152091
Authorizer:M. Clapham Enterer:M. Clapham
Modifier:M. Clapham Research group:paleoentomology
Created:2013-11-07 00:19:40 Last modified:2014-08-09 14:17:41
Access level:the public Released:2013-11-07 00:19:40
Creative Commons license:CC BY
Reference information

Primary reference:
48801. A. Petrunkevitch. 1945. Calcitro fisheri, a new fossil arachnid. American Journal of Science 243:320-329 [M. Clapham/M. Clapham]

Secondary references:

51017 R. V. Chamberlin. 1949. A new fossil chilopod from the late Cenozoic. Transactions of the San Diego Society of Natural History 11:117-120 [M. Clapham/M. Clapham]
48818 W. D. Pierce. 1950. Fossil arthropods from Onyx Marble. Bulletin of the Southern California Academy of Sciences 49:101-104 [M. Clapham/M. Clapham]
48819 W. D. Pierce. 1951. Fossil arthropods from Onyx-Marble. Bulletin of the Southern California Academy of Sciences 50:34-49 [M. Clapham/M. Clapham]
48800 J. M. Rowland and W. D. Sissom. 1980. Report on a fossil palpigrade from the Tertiary of Arizona, and a review of the morphology and systematics of the order (Arachnida: Palpigradida). The Journal of Arachnology 8:69-86 [M. Clapham/M. Clapham/M. Clapham]