Sidney R. Ash

1.5k total citations
57 papers, 1.1k citations indexed

About

Sidney R. Ash is a scholar working on Ecology, Evolution, Behavior and Systematics, Plant Science and Molecular Biology. According to data from OpenAlex, Sidney R. Ash has authored 57 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 44 papers in Ecology, Evolution, Behavior and Systematics, 23 papers in Plant Science and 20 papers in Molecular Biology. Recurrent topics in Sidney R. Ash's work include Plant Diversity and Evolution (42 papers), Plant and Fungal Species Descriptions (19 papers) and Fern and Epiphyte Biology (18 papers). Sidney R. Ash is often cited by papers focused on Plant Diversity and Evolution (42 papers), Plant and Fungal Species Descriptions (19 papers) and Fern and Epiphyte Biology (18 papers). Sidney R. Ash collaborates with scholars based in United States, United Kingdom and Portugal. Sidney R. Ash's co-authors include William D. Tidwell, Geoffrey T. Creber, Ronald J. Litwin, Léa Grauvogel‐Stamm, Alfred Traverse, Kathleen B. Pigg, Gary L. Miller, Nancy Riggs, George E. Gehrels and Joseph L. Wooden and has published in prestigious journals such as Scientific Reports, Geology and Geological Society of America Bulletin.

In The Last Decade

Sidney R. Ash

56 papers receiving 956 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Sidney R. Ash United States 18 608 491 293 194 145 57 1.1k
Georges Barale France 23 803 1.3× 732 1.5× 364 1.2× 269 1.4× 221 1.5× 90 1.4k
Denise Pons France 18 511 0.8× 461 0.9× 280 1.0× 189 1.0× 103 0.7× 43 866
Shaila Chandra India 18 567 0.9× 409 0.8× 275 0.9× 144 0.7× 69 0.5× 52 854
Alba B. Zamuner Argentina 18 718 1.2× 395 0.8× 313 1.1× 225 1.2× 100 0.7× 36 998
Analía E. Artabe Argentina 20 877 1.4× 469 1.0× 372 1.3× 143 0.7× 128 0.9× 53 1.2k
Eduardo M. Morel Argentina 20 660 1.1× 516 1.1× 304 1.0× 160 0.8× 95 0.7× 54 1000
Frédéric Thévenard France 23 948 1.6× 673 1.4× 454 1.5× 287 1.5× 103 0.7× 48 1.3k
David T. Pocknall New Zealand 19 574 0.9× 324 0.7× 238 0.8× 553 2.9× 120 0.8× 49 1.1k
Geoffrey T. Creber United Kingdom 12 487 0.8× 297 0.6× 189 0.6× 384 2.0× 110 0.8× 16 797
Dan S. Chaney United States 20 617 1.0× 594 1.2× 196 0.7× 362 1.9× 221 1.5× 61 1.1k

Countries citing papers authored by Sidney R. Ash

Since Specialization
Citations

This map shows the geographic impact of Sidney R. Ash's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Sidney R. Ash with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Sidney R. Ash more than expected).

Fields of papers citing papers by Sidney R. Ash

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sidney R. Ash. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Sidney R. Ash. The network helps show where Sidney R. Ash may publish in the future.

Co-authorship network of co-authors of Sidney R. Ash

This figure shows the co-authorship network connecting the top 25 collaborators of Sidney R. Ash. A scholar is included among the top collaborators of Sidney R. Ash based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Sidney R. Ash. Sidney R. Ash is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Byers, Bruce A., et al.. (2020). Fire-scarred fossil tree from the Late Triassic shows a pre-fire drought signal. Scientific Reports. 10(1). 20104–20104. 4 indexed citations
2.
Byers, Bruce A., Sidney R. Ash, Dan S. Chaney, & Lucía DeSoto. (2014). First known fire scar on a fossil tree trunk provides evidence of Late Triassic wildfire. Palaeogeography Palaeoclimatology Palaeoecology. 411. 180–187. 19 indexed citations
3.
Ash, Sidney R. & Stephen T. Hasiotis. (2013). New occurrences of the controversial Late Triassic plant fossil Sanmiguelia Brown and associated ichnofossils in the Chinle Formation of Arizona and Utah, USA. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 268(1). 65–82. 2 indexed citations
4.
Fischer, Ján, Brian J. Axsmith, & Sidney R. Ash. (2010). First unequivocal record of the hybodont shark egg capsule Palaeoxyris in the Mesozoic of North America. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 255(3). 327–344. 12 indexed citations
5.
Grauvogel‐Stamm, Léa & Sidney R. Ash. (2005). Recovery of the Triassic land flora from the end-Permian life crisis. Comptes Rendus Palevol. 4(6-7). 593–608. 97 indexed citations
6.
Ash, Sidney R. & Rodney Arthur Savidge. (2004). THE BARK OF THE LATE TRIASSIC ARAUCARIOXYLON ARIZONICUM TREE FROM PETRIFIED FOREST NATIONAL PARK, ARIZONA. IAWA Journal - KU Leuven/IAWA Journal. 25(3). 349–368. 17 indexed citations
7.
Tidwell, William D. & Sidney R. Ash. (2003). Revision and description of two new species of Charliea Mamay from Pennsylvanian strata in New Mexico and Utah, USA. Review of Palaeobotany and Palynology. 124(3-4). 297–306. 6 indexed citations
8.
Ash, Sidney R. & Geoffrey T. Creber. (2000). The Araucarioxylon arizonicum trees of the Petrified Forest. National Park, Arizona, USA. Palaeontology. 43. 1 indexed citations
9.
White, James D. L., David L. White, Tracy Vallier, George D. Stanley, & Sidney R. Ash. (1992). Middle Jurassic strata link Wallowa, Olds Ferry, and Izee terranes in the accreted Blue Mountains island arc, northeastern Oregon. Geology. 20(8). 729–729. 19 indexed citations
10.
Ash, Sidney R. & Kathleen B. Pigg. (1991). A NEW JURASSIC ISOETITES (ISOETALES) FROM THE WALLOWA TERRANE IN HELLS CANYON, OREGON AND IDAHO. American Journal of Botany. 78(12). 1636–1642. 22 indexed citations
11.
Miller, Gary L. & Sidney R. Ash. (1988). The oldest freshwater decapod crustacean, from the Triassic of Arizona. Biodiversity Heritage Library (Smithsonian Institution). 24 indexed citations
12.
Ash, Sidney R.. (1982). Occurrence of the controversial plant fossil Sanmiguelia cf. S. lewisi Brown in the Upper Triassic of Utah. Journal of Paleontology. 56(3). 751–754. 1 indexed citations
13.
Ash, Sidney R.. (1979). Skilliostrobusgen. nov., a new lycopsid cone from the Early Triassic of Australia. Alcheringa An Australasian Journal of Palaeontology. 3(2). 73–89. 26 indexed citations
14.
Ash, Sidney R.. (1976). Occurrence of the controversial plant fossil Sanmiguelia in the upper Triassic of Texas. Journal of Paleontology. 50(5). 799–804. 12 indexed citations
15.
Ash, Sidney R.. (1973). Two new late Triassic plants from the Petrified Forest of Arizona. Journal of Paleontology. 47(1). 46–53. 15 indexed citations
16.
Ash, Sidney R.. (1970). Pagiophyllum simpsonii, a new conifer from the Chinle Formation (upper Triassic) of Arizona. Journal of Paleontology. 44(5). 945–952. 8 indexed citations
17.
Ash, Sidney R.. (1970). Dinophyton, a problematical new plant genus from the Upper Triassic of the south-western United States. Biodiversity Heritage Library (Smithsonian Institution). 14 indexed citations
18.
19.
20.
Ash, Sidney R.. (1961). Bibliography and index of conodonts, 1949-1958. Micropaleontology. 7(2). 213–244. 2 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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