Collaborative macrostratigraphic, lithological, and environmental data.

Explore the data

North America


New Zealand

Deep Sea


Macrostrat aims to become a community resource for the addition, editing, and access of macrostratigraphic, lithological, environmental, and economic data. It is designed to facilitate the testing of hypotheses related to the spatial and temporal distribution of sedimentary, igneous, and metamorphic rocks and proxy data extracted from them. Interactive applications built upon Macrostrat are designed for educational and research purposes.
All data is provided under a Creative Commons Attribution 4.0 International license (CC-BY-4.0).
In presentations: Acknolwedge Macrostrat by name. You may also include any of the Macrostrat logos accessible on this webpage.

In publications: Acknowledge Macrostrat as the source of any information or data. A citable paper describing the Macrostrat data model, technical infrastructure, and current data set is forthcoming. In addition, you should also include citations to the original references associated with the data set that was used. These references are accessible from the API. If you would like your paper listed in the official publications, please contact us and we will provide a citation and link!
Macrostrat is currently supported by NSF EAR-1150082, NSF ICER-1440312, and the UW-Madison Department of Geoscience.


All data contained in the Macrostrat database is freely available via our Application Programming Interface (API). It provides a quick and convinient way to retrieve data for analysis or mobile application creation. For more information head over to the API root to explore what options are available.


Shanan Peters
Principal Investigator
John Czaplewski
Lead Developer
Jon Husson
Postdoctoral Researcher
Andrew Zaffos
Postdoctoral Researcher
Sharon McMullen
Noel Heim
Researcher (former)
Puneet Kishor
Generally Ignored


  1. Fraass, A.J., D.C. Kelly, S.E. Peters. 2015. Macroevolutionary history of the planktic foraminifera. Annual Review of Earth and Planetary Sciences 43:5.1-5.28. [link]
  2. Peters, S.E., D.C. Kelly, and A. Fraass. 2013. Oceanographic controls on the diversity and extinction of planktonic foraminifera. Nature. 493:398-401.[link].
  3. Benson, R.B.J., P.D. Mannion, R.J. Butler, P. Upchurch, A. Goswami, and S.E. Evans. 2012. Cretaceous tetrapod fossil record sampling and faunal turnover: implications for biogeography and the rise of modern clades. Palaeogeography, Palaeoclimatology, Palaeoecology. [link].
  4. Rook, D.L., N.A. Heim, and J. Marcot. 2012.Contrasting patterns and connections of rock and biotic diversity in the marine and non-marine fossil records of North America. Palaeogeography, Palaeoclimatology, Palaeoecology. [link].
  5. Halevy, I, S.E. Peters, and W.W. Fischer. 2012. Sulfate burial constraints on the Phanerozoic sulfur cycle. Science 337:331-334. doi:10.1126/science.1220224.[link].
  6. Peters, S.E. and R.R. Gaines. 2012. Formation of the ‘Great Unconformity’ as a trigger for the Cambrian explosion. Nature 484:363-366. doi:10.1038/nature10969. [link].
  7. Finnegan, S., N.A. Heim, S.E. Peters and W.W. Fischer. 2012. Climate change and the selective signature of the late Ordovician mass extinction. PNAS doi:10.1073/pnas.1117039109. [link].
  8. Hannisdal, B. and S.E. Peters. 2011. Phanerozoic Earth system evolution and marine biodiversity. Science 334:1121-1124. [link].
  9. Butler, R.J. et al. 2011. Sea level, dinosaur diversity and sampling biases: investigating the ‘common cause’ hypothesis in the terrestrial realm. Proc. Roy. Soc. London B 278:1165-1170. [link].
  10. Melott, A.L. and R.K. Bambach 2011. A ubquitous ~62-Myr periodic fluctuation superimposed on general trends in fossil biodiversity II. Evolutionary dynamics associated with period fluctuation in marine diversity. Paleobiology 37:369-382. [link].
  11. Heim, N.A. and S.E. Peters. 2011. Regional environmental breadth predicts geographic range and longevity in fossil marine genera. PLoS One 6:(5) e18946; doi:10.1371/journal.pone.0018946 [PDF].
  12. Peters, S.E. and N.A. Heim. 2011. Macrostratigraphy and macroevolution in marine environments: testing the common-cause hypothesis. In, Smith, A.B., and A. McGowan, eds. Comparing the rock and fossil records: implications for biodiversity. Special Publication of the Geological Society of London 358:95-104. doi: 10.1144/SP358.7. [link]
  13. Peters, S.E. and N.A. Heim. 2011. Macrostratigraphy and macroevolution in marine environments: testing the common-cause hypothesis. In, Smith, A.B., and A. McGowan, eds. Comparing the rock and fossil records: implications for biodiversity. Special Publication of the Geological Society of London 358:95-104. doi: 10.1144/SP358.7. [link]
  14. Peters, S.E. and N.A. Heim. 2011. The stratigraphic distribution of marine fossils in North America. Geology 39:259-262; doi: 10.1130/G31442.1. [PDF]
  15. Finnegan, S., S.E. Peters, and W.W. Fischer. 2011. Late Ordovician-Early Silurian selective extinction patterns in Laurentia and their relationship to climate change. In J.C. Gutiérrez-Marco, I. Rábano, and D. Garcia-Bellido, eds. Ordovician of the World. Cuadernos del Museo Geominera 14: 155-159.
  16. Meyers, S.R. and S.E. Peters. 2011. A 56 million year rhythm in North American sedimentation during the Phanerozoic. EPSL doi:10.1016/j.epsl.2010.12.044. [PDF]
  17. Heim, N.A. and S.E. Peters. 2011. Covariation in macrostratigraphic and macroevolutionary patterns in the marine record of North America. GSA Bulletin 123:620-630. [PDF]
  18. Peters, S.E. and N.A. Heim. 2010. The geological completeness of paleontological sampling in North America. Paleobiology 36:61-79. [PDF].
  19. Marx, F.G. 2009. Marine mammals through time: when less is more in studying palaeodiversity. Proceedings of the Royal Society of London B 138:183-196. [link]
  20. McGowan, A.J., and A. Smith. 2008. Are global Phanerozoic marine diversity curves truly global? A study of the relationship between regional rock records and global Phanerozoic marine diversity. Paleobiology 34:80-103. [link]
  21. Mayhew, P.J., G.B. Jenkins, and T.G. Benton. 2008. Long-term association between global temperature and biodiversity, origination and extinction in the fossil record. Proceedings of the Royal Society of London B 275:47-53. [link]
  22. Peters, S.E. 2008. Environmental determinants of extinction selectivity in the fossil record. Nature 454:626-629. [PDF] [supplement]
  23. Peters, S.E. 2008. Macrostratigraphy and its promise for paleobiology. Pp. 205-232 In P.H. Kelley and R.K. Bambach, eds. From evolution to geobiology: research questions driving paleontology at the start of a new century. The Paleontological Society Papers, Vol. 14. 9.[PDF]
  24. Peters, S.E. and W.I. Ausich. 2008. A sampling-standardized macroevolutionary history for Ordovician-Early Silurian crinoids. Paleobiology 34:104-116. [PDF]
  25. Smith, A.B. 2007. Marine diversity through the Phanerozoic: problems and prospects. Journal of the Geological Society, London 164:731-745.[link]
  26. Peters, S.E. 2007. The problem with the Paleozoic. Paleobiology 33:165-181.[PDF]
  27. Peters, S.E. 2006. Macrostratigraphy of North America. Journal of Geology 114:391-412.[PDF]
  28. Peters, S.E. 2005. Geologic constraints on the macroevolutionary history of marine animals. Proceedings of the National Academy of Sciences U.S.A. 102:12326-12331.[PDF]