World's Best Scientists 2026 revealed!

D-Index & Metrics

Earth Science

D-Index
39
Citations
5389
World Ranking
6192
National Ranking
310

John A. Long publication distribution in Earth Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Earth Science in 2026. The highlighted bar marks where John A. Long sits on this spectrum.

38–42 publications: 1 scientists 43–47 publications: 0 scientists 48–52 publications: 3 scientists 53–57 publications: 8 scientists 58–62 publications: 11 scientists 63–67 publications: 16 scientists 68–72 publications: 24 scientists 73–77 publications: 31 scientists 78–82 publications: 49 scientists 83–87 publications: 77 scientists 88–92 publications: 86 scientists 93–97 publications: 88 scientists 98–102 publications: 92 scientists 103–107 publications: 84 scientists 108–112 publications: 102 scientists 113–117 publications: 108 scientists 118–122 publications: 117 scientists 123–127 publications: 126 scientists 128–132 publications: 146 scientists 133–137 publications: 114 scientists 138–142 publications: 102 scientists 143–147 publications: 127 scientists 148–152 publications: 102 scientists 153–157 publications: 112 scientists 158–162 publications: 102 scientists 163–167 publications: 127 scientists 168–172 publications: 121 scientists 173–177 publications: 112 scientists 178–182 publications: 109 scientists 183–187 publications: 98 scientists 188–192 publications: 92 scientists 193–197 publications: 105 scientists 198–202 publications: 77 scientists 203–207 publications: 80 scientists 208–212 publications: 89 scientists 213–217 publications: 70 scientists 218–222 publications: 74 scientists 223–227 publications: 74 scientists 228–232 publications: 70 scientists 233–237 publications: 67 scientists 238–242 publications: 59 scientists 243–247 publications: 67 scientists 248–252 publications: 51 scientists 253–257 publications: 46 scientists 258–262 publications: 41 scientists 263–267 publications: 39 scientists 268–272 publications: 34 scientists 273–277 publications: 39 scientists 278–282 publications: 35 scientists 283–287 publications: 36 scientists 288–292 publications: 35 scientists 293–297 publications: 29 scientists 298–302 publications: 23 scientists 303–307 publications: 39 scientists 308–312 publications: 34 scientists 313–317 publications: 23 scientists 318–322 publications: 18 scientists 323–327 publications: 18 scientists 328–332 publications: 21 scientists 333–337 publications: 20 scientists 338–342 publications: 15 scientists 343–347 publications: 13 scientists 348–352 publications: 24 scientists 353–357 publications: 25 scientists 358–362 publications: 10 scientists 363–367 publications: 20 scientists 368–372 publications: 17 scientists 373–377 publications: 18 scientists 378–382 publications: 15 scientists 383–387 publications: 7 scientists 388–392 publications: 22 scientists 393–397 publications: 9 scientists 398–402 publications: 11 scientists 403–407 publications: 16 scientists 408–412 publications: 4 scientists 413–417 publications: 5 scientists 418–422 publications: 14 scientists 423–427 publications: 8 scientists 428–432 publications: 7 scientists 433–437 publications: 7 scientists 438–442 publications: 10 scientists 443–447 publications: 10 scientists 448–452 publications: 3 scientists 453–457 publications: 9 scientists 458–462 publications: 11 scientists 463–467 publications: 4 scientists 468–472 publications: 6 scientists 473–477 publications: 11 scientists 478–482 publications: 8 scientists 483–487 publications: 2 scientists 488–492 publications: 3 scientists 493–497 publications: 4 scientists 498–502 publications: 4 scientists 503–507 publications: 4 scientists 508–509 publications: 4 scientists 510+ publications: 100 scientists
38 publications 510+

This scientist: 158 publications — 40th percentile

40% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 510 publications or more.

John A. Long D-index placement in Earth Science in 2026

The chart shows the D-index (discipline H-index) distribution of Earth Science scientists ranked by Research.com in 2026. The highlighted bar marks where John A. Long sits on this spectrum.

30 D-Index: 15 scientists 31 D-Index: 42 scientists 32 D-Index: 60 scientists 33 D-Index: 90 scientists 34 D-Index: 103 scientists 35 D-Index: 108 scientists 36 D-Index: 142 scientists 37 D-Index: 147 scientists 38 D-Index: 147 scientists 39 D-Index: 152 scientists 40 D-Index: 143 scientists 41 D-Index: 157 scientists 42 D-Index: 141 scientists 43 D-Index: 151 scientists 44 D-Index: 140 scientists 45 D-Index: 135 scientists 46 D-Index: 121 scientists 47 D-Index: 108 scientists 48 D-Index: 128 scientists 49 D-Index: 111 scientists 50 D-Index: 106 scientists 51 D-Index: 112 scientists 52 D-Index: 102 scientists 53 D-Index: 103 scientists 54 D-Index: 94 scientists 55 D-Index: 61 scientists 56 D-Index: 101 scientists 57 D-Index: 71 scientists 58 D-Index: 65 scientists 59 D-Index: 78 scientists 60 D-Index: 93 scientists 61 D-Index: 56 scientists 62 D-Index: 58 scientists 63 D-Index: 52 scientists 64 D-Index: 63 scientists 65 D-Index: 49 scientists 66 D-Index: 53 scientists 67 D-Index: 57 scientists 68 D-Index: 50 scientists 69 D-Index: 44 scientists 70 D-Index: 44 scientists 71 D-Index: 31 scientists 72 D-Index: 33 scientists 73 D-Index: 33 scientists 74 D-Index: 23 scientists 75 D-Index: 32 scientists 76 D-Index: 24 scientists 77 D-Index: 17 scientists 78 D-Index: 19 scientists 79 D-Index: 9 scientists 80 D-Index: 21 scientists 81 D-Index: 20 scientists 82 D-Index: 17 scientists 83 D-Index: 19 scientists 84 D-Index: 19 scientists 85 D-Index: 14 scientists 86 D-Index: 6 scientists 87 D-Index: 14 scientists 88 D-Index: 17 scientists 89 D-Index: 10 scientists 90 D-Index: 8 scientists 91 D-Index: 8 scientists 92 D-Index: 9 scientists 93 D-Index: 6 scientists 94+ D-Index: 98 scientists
30 D-Index 94+

This scientist: 39 D-Index — 23rd percentile

23% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 94 D-Index or more.

Overview

John A. Long is affiliated with Flinders University in Australia. Their research primarily focuses on Earth and Planetary Sciences with a significant emphasis on Environmental Science. Within these fields, they have contributed extensively to subfields such as Paleontology, Nature and Landscape Conservation, Nutrition and Dietetics, Surgery, and Biomedical Engineering.

The scientist's key topics of work cover a range of subjects including Paleontology and Evolutionary Biology, Ichthyology and Marine Biology, Evolution and Paleontology Studies, Clinical Nutrition and Gastroenterology, Fish Biology, Ecology, and Behavior, Paleontology and Stratigraphy of Fossils, and Isotope Analysis in Ecology.

Frequent publication venues for John A. Long include Gastroenterology, Nature, PLoS ONE, bioRxiv (Cold Spring Harbor Laboratory), and Science. The scientist has collaborated extensively with other researchers, with most frequent coauthors being Alice M. Clement, Richard Cloutier, Kate Trinajstic, Per Ahlberg, and Michael S. Y. Lee.

Recent notable publications include:

  • Elpistostege and the origin of the vertebrate hand (2020, Nature)
  • Exceptional preservation of organs in Devonian placoderms from the Gogo lagerstätte (2022, Science)
  • Brain Reconstruction Across the Fish-Tetrapod Transition; Insights From Modern Amphibians (2021, Frontiers in Ecology and Evolution)
  • Establishment of a Patient-Derived Xenograft Tumor From Hepatitis C-Associated Liver Cancer and Evaluation of Imatinib Treatment Efficacy (2020, Hepatology)
  • The Gogo Formation Lagerstätte: a view of Australia's first great barrier reef (2021, Journal of the Geological Society)

Best Publications

  • Trace element content of sedimentary pyrite as a new proxy for deep-time ocean-atmosphere evolution

    Ross R. Large;Jacqueline A. Halpin;Leonid V. Danyushevsky;Valeriy V. Maslennikov

  • Early-Middle Palaeozoic biogeography of Asian terranes derived from Gondwana

    Clive Burrett;John A. Long;Brian Stait

  • The Rise of Fishes: 500 Million Years of Evolution

    John A. Long

  • The greatest step in vertebrate history: a paleobiological review of the fish-tetrapod transition.

    John A. Long;Malcolm S. Gordon

  • An arid-adapted middle Pleistocene vertebrate fauna from south-central Australia

    Gavin J. Prideaux;John A. Long;John A. Long;Linda K. Ayliffe;Linda K. Ayliffe;John C. Hellstrom

  • Live birth in the Devonian period

    John Albert Long;John Albert Long;John Albert Long;Kate Trinajstic;Gavin C Young;Tim John Senden

  • An exceptional Devonian fish from Australia sheds light on tetrapod origins

    John A. Long;John A. Long;John A. Long;Gavin C. Young;Tim Holland;Tim Holland;Tim J. Senden

  • Palaeozoic Vertebrate Biostratigraphy and Biogeography

    John A. Long

  • Bayesian Morphological Clock Methods Resurrect Placoderm Monophyly and Reveal Rapid Early Evolution in Jawed Vertebrates.

    Benedict King;Tuo Qiao;Michael S. Y. Lee;Michael S. Y. Lee;Min Zhu

  • The Late Devonian Gogo Formation Lägerstatte of Western Australia: Exceptional Early Vertebrate Preservation and Diversity

    John A. Long;Kate Trinajstic

  • Cycles of nutrient trace elements in the Phanerozoic ocean

    Ross R. Large;Jacqueline A. Halpin;Elena Lounejeva;Leonid V. Danyushevsky

  • A new rhizodontiform fish from the Early Carboniferous of Victoria, Australia, with remarks on the phylogenetic position of the group

    John A Long

  • Crossopterygian fishes from the Devonian of Antarctica: systematics, relationships and biogeographic significance

    Gavin C. Young;John A. Long;A. Ritchie

  • The structure of the sarcopterygian Onychodus jandemarrai n. sp. from Gogo, Western Australia: with a functional interpretation of the skeleton

    Mahala Andrews;John Long;Per Ahlberg;Richard Barwick

  • The earliest known stem-tetrapod from the Lower Devonian of China

    Jing Lu;Min Zhu;John A Long;Wenjin Zhao

  • Exceptional preservation of nerve and muscle tissues in Late Devonian placoderm fish and their evolutionary implications

    Kate Trinajstic;Carina Marshall;John Long;Kat Bifield

  • Fossil Musculature of the Most Primitive Jawed Vertebrates

    Kate Trinajstic;Kate Trinajstic;Sophie Sanchez;Sophie Sanchez;Vincent Dupret;Paul Tafforeau

  • A new osteolepiform fish from the Lower Carboniferous Raymond Formation, Drummond Basin, Queensland

    R. C. Fox;K. S.W. Campbell;R. E. Barwick;J. A. Long

  • The structure and relationships of a new osteolepiform fish from the Late Devonian of Victoria, Australia

    John A. Long

  • New ischnacanthid acanthodians from the Early Devonian of Australia, with comments on acanthodian interrelationships

    J. A. Long

Frequent Co-Authors

Ross R. Large
Ross R. Large University of Tasmania
Leonid V. Danyushevsky
Leonid V. Danyushevsky University of Tasmania
Jacqueline A. Halpin
Jacqueline A. Halpin University of Tasmania
Paul Tafforeau
Paul Tafforeau European Synchrotron Radiation Facility
Luis M. Chiappe
Luis M. Chiappe Natural History Museum of Los Angeles County
Linda K. Ayliffe
Linda K. Ayliffe Australian National University
Lars Werdelin
Lars Werdelin Swedish Museum of Natural History
Brian K. Hall
Brian K. Hall Dalhousie University
Paul Palmqvist
Paul Palmqvist University of Malaga
Shaun P. Collin
Shaun P. Collin La Trobe University

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