Macrostrat API

The Macrostrat API provides access to a comprehensive database of geological data including stratigraphic columns, geologic units, fossils, paleogeography, and geologic maps. Data is sourced from the Macrostrat database maintained by the University of Wisconsin-Madison.

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Screenshot:
Screenshot of Macrostrat API homepage
Base URL: https://macrostrat.org/
Auth: unknown
Endpoints: 15
Reachable: yes
CORS: unknown
Last checked: 2026-03-14 16:08:33.836395

Links

Homepage: https://macrostrat.org/
API Base: https://macrostrat.org/
Documentation:
SDKs:

100.0%

Uptime (7d)

475ms

Avg latency (7d)

49

Probes (7d)

Latency (7d)

Success Rate (7d)

Topics

EARTH_SCIENCE, GEOLOGY, SCIENCE

Endpoints

Method Path Summary Auth Last Status Latency
GET columns Search and summarize columns — 200 504ms
GET defs/autocomplete Autocomplete definitions — 404 406ms
GET defs/columns Get column definitions — — —
GET defs/environments Get environment definitions — 404 383ms
GET defs/intervals Get time interval definitions — 404 385ms
GET defs/lithologies Get lithology definitions — 404 389ms
GET defs/sources Get source definitions — — —
GET defs/strat_name_concepts Get stratigraphic name concepts — 404 392ms
GET defs/strat_names Get stratigraphic name definitions — — —
GET fossils Get fossil collections — 200 399ms
GET geologic_units/map Get geologic map units — 404 387ms
GET paleogeography Get paleogeography data — 404 386ms
GET sections Summarize units by gap-bound packages — 200 687ms
GET stats Get database statistics — 404 385ms
GET units Get geologic units — 200 1581ms