Abundacapsa impages Licari

Plant Fossil Names Registry Number: PFN000023

Act LSID: urn:lsid:plantfossilnames.org:act:23

Authors: G. R. Licari

Rank: species

Reference: Licari, G. R. (1978): Biogeology of the late pre-Phanerozoic Beck Spring Dolomite of eastern California. – Journal of Paleontology 52(4): 767–792.

Page of description: 780

Illustrations or figures: pl. 2, fig. 7

Name is type taxon for

Types

Not publicHolotype n/n, Biogeology Clean Laboratory, University of California, Santa Barbara, California, USA
Figures: pl. 2. fig. 7

Licari (1978): Holotype is located on thin section C250(15) from the Cloud Collection. Coordinates (11.2, 6.5).

Diagnosis

As for the genus, individual cells averaging 5.6 μm in diameter (for 82 cells measured). Colonial aggregates form rinds up to 92 μm thick around exterior of oncolites. Table 1 summarizes pertinent morphologic characteristics.

Etymology

Named for the distribution of the colony bordering the exterior of oncolites.

Stratigraphy

Proterozoic, Mesoproterozoic
The fossiliferous outcrops occur 2,900 m below the lowest metazoan trace fossils, are younger than 1.7 b.y. and are correlated to the Apache Group of Arizona, bracketed between radiometric ages of 1.2 and 1.4 b.y.

Locality

United States
Locality 2 of 23/2/69 – Black siliceous oncolitic layer about 19 m stratigraphically below the top exposure of the Beck Spring Dolomite, on the north slope of the Kingston Range, south side of road 0.5 km east-southeast of Horse Thief Springs, northeastern San Bernardino Coun ty, California. Unsurveyed, NE¼, sec. 2, T19N, R10E, of Horse Thief Springs Quadrangle, California-Nevada (1:62,500). Elevation about 1,350

Plant fossil remain

cyanobacteria and other prokaryotes