Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies
if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the
same subfield and year (this is the minimum needed to enter the top 1%, not the average
within it), or reaches the top citation threshold in at least one of its specific research
topics.
Devonian eustatic fluctuations in Euramerica
1985776 citationsJ. G. Johnson, Gilbert Klapper et al.profile →
Peers — A (Enhanced Table)
Peers by citation overlap · career bar shows stage (early→late)
cites ·
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This map shows the geographic impact of J. G. Johnson'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 J. G. Johnson with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J. G. Johnson more than expected).
This network shows the impact of papers produced by J. G. Johnson. 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 J. G. Johnson. The network helps show where J. G. Johnson may publish in the future.
Co-authorship network of co-authors of J. G. Johnson
This figure shows the co-authorship network connecting the top 25 collaborators of J. G. Johnson.
A scholar is included among the top collaborators of J. G. Johnson 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 J. G. Johnson. J. G. Johnson 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.
Johnson, J. G., Gilbert Klapper, & Charles A. Sandberg. (2010). Late Devonian eustatic cycles around margin of Old Red Continent. Annales de la Société géologique de Belgique.8 indexed citations
2.
Johnson, J. G.. (1982). Occurrence of phyletic gradualism and punctuated equilibria through geologic time. Journal of Paleontology. 56(6). 1329–1331.17 indexed citations
3.
Johnson, J. G.. (1979). INTENT AND REALITY IN BIOSTRATIGRAPHIC ZONATION. Journal of Paleontology. 53(4). 931–942.17 indexed citations
4.
Johnson, J. G. & Gilbert Klapper. (1978). Devonian brachiopods and conodonts from central Oregon. Journal of Paleontology. 52(2). 295–299.2 indexed citations
5.
Johnson, J. G., et al.. (1977). Atrypella scheii (Holtedahl) and Atrypella phoca (Salter), (Silurian Brachiopoda). Journal of Paleontology. 51(2). 350–356.8 indexed citations
6.
Johnson, J. G., et al.. (1976). Late early Devonian brachiopods and biofacies from central Nevada. Journal of Paleontology. 50(6). 1113–1128.12 indexed citations
7.
Johnson, J. G.. (1975). Allopatric speciation in fossil brachiopods. Journal of Paleontology. 49(4). 646–661.19 indexed citations
8.
Johnson, J. G.. (1974). Oriskania (terebratulid brachiopod) in the Lower Devonian of central Nevada. Journal of Paleontology. 48(6). 1207–1212.2 indexed citations
9.
Johnson, J. G., et al.. (1972). A Rasenriff fauna from the middle Devonian of Nevada. Journal of Paleontology. 46(6). 892–899.6 indexed citations
10.
Boucot, A. J. & J. G. Johnson. (1972). Callicalyptella, a new genus of notanopliid brachiopod from the Devonian of Nevada. Journal of Paleontology. 46(2). 299–302.4 indexed citations
Johnson, J. G.. (1971). Some new and problematical brachiopods from the lower Devonian of Nevada. Journal of Paleontology. 45(1). 95–99.2 indexed citations
13.
Johnson, J. G. & A. J. Boucot. (1970). Brachiopods and age of the Tor limestone of central Nevada. Journal of Paleontology. 44(2). 265–269.5 indexed citations
14.
Johnson, J. G.. (1969). Some North American rensselandiid brachiopods. Journal of Paleontology. 43(3). 829–837.4 indexed citations
15.
Anderson, Michael M., A. J. Boucot, & J. G. Johnson. (1966). Devonian terebratulid brachiopods from the Accraian series of Ghana. Journal of Paleontology. 40(6). 1365–1367.7 indexed citations
16.
Boucot, A. J. & J. G. Johnson. (1966). Lissocoelina and its homeomorph Plicocoelina n. gen. (Silurian, Pentameracea). Journal of Paleontology. 40(5). 1037–1042.1 indexed citations
Boucot, A. J. & J. G. Johnson. (1964). Additional occurrences of eospiriferid brachiopods. Journal of Paleontology. 38(3). 605–606.1 indexed citations
19.
Boucot, A. J., et al.. (1964). On some atrypoid, retzioid and athyridoid Brachiopoda. Journal of Paleontology. 38(5). 805–822.144 indexed citations
20.
Johnson, J. G.. (1962). Brachiopod faunas of the Nevada Formation (Devonian) in central Nevada. Journal of Paleontology. 36(1). 165–169.12 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.