Section 9a, 75m above base of section (Tonian of the United States)

Also known as sample SP12-63-30 Porter and Riedman (2016)

Where: Arizona (36.2° N, 111.8° W: paleocoordinates 0.0° N, 0.0° E)

• coordinate estimated from map

When: Jupiter Member (Galeros Formation), Tonian (1000.0 - 850.0 Ma)

• 75m above base of section and 260m above base of Tanner Member (see Porter and Riedman 2016; Supplementary data)

Environment/lithology: marine; black, silty shale

• "black shale" (Porter and Riedman, 2016; Supplementary data)

Size class: microfossils

Preservation: adpression

Reposited in the UCMP

Collection methods: bulk, chemical, smear slide, hydrochloric, hydroflouric,

• Specimens are reposited in the microfossil collections of the University of California Museum of Paleontology (UCMP) under accession numbers 36072–36106 and locality numbers

•MF7688–MF7689.

Primary reference: S. M. Porter and L. A. Riedman. 2016. Systematics of organic-walled microfossils from the ca. 780-740 Ma Chuar Group, Grand Canyon, Arizona. Journal of Paleontology 90(5):815-853 [P. Cohen/M. Hernandez/S. Porter]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 237970: authorized by Leigh Anne Riedman, entered by Leigh Anne Riedman on 27.12.2024

Creative Commons license: CC BY (attribution)

Taxonomic list

• taxonomic list from Porter and Riedman 2016 Supplementary data
 Life -
Valeria lophostriata Jankauskas 1979
Squamosphaera colonialica Jankauskas 1979
Leiosphaeridia sp. Eisenack 1958
Lanulatisphaera laufeldii
  -
Culcitulisphaera revelata
  -
Culcitulisphaera revelata Riedman and Porter 2016
Microlepidopalla mira
  -
Microlepidopalla mira n. gen. n. sp.
Microlepidopalla mira n. gen. n. sp. Porter and Riedman 2016