Match!
Cindy V. Looy
University of California, Berkeley
74Publications
24H-index
2,270Citations
Publications 74
Newest
#1William A. DiMichele (Smithsonian Institution)H-Index: 44
#2Carol L. Hotton (Smithsonian Institution)H-Index: 13
Last.Robert W. Hook (University of Texas at Austin)H-Index: 6
view all 4 authors...
Fossil floras have been recovered from a unique deposit of early Permian age in North-Central Texas. The site, Kola Switch, preserves three distinct floras in different lithofacies, in a succession from a single outcrop. The sedimentary environment appears to be a floodplain channel fill of primarily siltstones and claystones. The lowermost flora, preserved in a kaolinitic siltstone, indicates active water flow. It is dominated by plants typical of well-drained substrates, dominated by Sphenopte...
#1Jeffrey P. Benca (University of California, Berkeley)H-Index: 3
#2Ivo A.P. Duijnstee (University of California, Berkeley)H-Index: 3
Last.Cindy V. Looy (University of California, Berkeley)H-Index: 24
view all 3 authors...
Although Siberian Trap volcanism is considered a primary driver of the largest extinction in Earth history, the end-Permian crisis, the relationship between these events remains unclear. However, malformations in fossilized gymnosperm pollen from the extinction interval suggest biological stress coinciding with pulsed forest decline. These grains are hypothesized to have been caused by enhanced ultraviolet-B (UV-B) irradiation from volcanism-induced ozone shield deterioration. We tested this pro...
#1William A. DiMichele (Smithsonian Institution)H-Index: 44
#2Robert W. Hook (University of Texas at Austin)H-Index: 6
Last.Dan S. Chaney (Smithsonian Institution)H-Index: 15
view all 6 authors...
Abstract Plant macrofossils and palynofossils occur in lower Permian (Wolfcampian) mudstones and very fine grained sandstones on the Sanzenbacher Ranch, Clay County, in north central Texas. Three macrofossil collections made by different field parties about 20 years apart contain a total of about 740 specimens. Macrofloras and palynofloras were assessed quantitatively. The macrofloras consists of about 36 whole-plant-proxy taxa, 12 of which are represented by a single specimen (32%). Two macrofl...
#1Giuseppa ForteH-Index: 2
#2Evelyn Kustatscher (LMU: Ludwig Maximilian University of Munich)H-Index: 14
Last.Hans Kerp (WWU: University of Münster)H-Index: 35
view all 5 authors...
A major global change, the transition from an icehouse to a greenhouse world, took place during the Permian. In the equatorial Euramerican floral realm this resulted in stepwise changes from sub-humid climates in the early Cisuralian to semi-arid/arid climate by the late Cisuralian. During the same time interval we see a change from spore plant-dominated lowland floras, to increasingly drought-tolerant floras dominated by conifers and other seed plants. A recently discovered Kungurian (late Cisu...
#1Robert A. Gastaldo (Colby College)H-Index: 30
#2Johann NevelingH-Index: 10
Last.John W. Geissman (UTD: University of Texas at Dallas)H-Index: 8
view all 6 authors...
Abstract: Vertebrate paleontologists have proposed a model for the terrestrial end-Permian event in the Karoo Basin, South Africa. The scenario envisions vegetational collapse that resulted in a phased extinction of vertebrate taxa in the uppermost Daptocephalus Assemblage Zone and overlying Lystrosaurus Assemblage Zone. These biodiversity patterns are placed into composite stratigraphic sections at key localities, several of which are in close spatial proximity. We present a stratigraphic frame...
#2Spencer G. LucasH-Index: 26
Last.Dan S. ChaneyH-Index: 15
view all 5 authors...
Plant fossils are described from five stratigraphic levels spanning the Pennsylvanian–Permian boundary in Abo Canyon, New Mexico. Charles B. Read collected the fossils in 1940 and 1941; Read’s field notes cannot be located. A combination of Read’s bed numbering pattern, his notes in the collections, and collection taxonomic composition permits them to be placed in an oldest to youngest sequence. The youngest fossils, from the Abo Formation of early Permian age, anchor the collection stratigraphi...
12345678