Locality · Corps of Engineers lakeshore: personal collecting tolerated
Lake Texoma
Grayson, Texas, United States
Lake Texoma on the Texas–Oklahoma border exposes Albian Duck Creek and Fort Worth limestones along its shores, where large ribbed Mortoniceras ammonites, oysters and heart urchins wash out in low water. It is a personal-collecting site on federal land, so finds cannot be sold. Whole ammonites over 30 cm are found every year by shoreline walkers.
| Country | United States |
|---|---|
| State / province | Texas |
| County | Grayson |
| Land manager / status | US Army Corps of Engineers |
| Access | Public shoreline below the Denison Dam and along the Texas and Oklahoma shores in low water |
| What is found | Cretaceous ammonites, Mortoniceras, oysters, Exogyra, echinoids |
Rules
Corps of Engineers land allows surface collecting of common invertebrate fossils for personal use with hand tools; no digging in the dam or banks, no sale. Ammonites are found in the Duck Creek and Fort Worth limestones exposed along the shore.
Source: https://www.swt.usace.army.mil/Locations/Tulsa-District-Lakes/Texas/Lake-Texoma/ (checked 2026-09-16).
Collecting rules
Elsewhere
Cite this article
Stratum Study. "Lake Texoma" (Locality). Stratum Study pack 2026.09, as of 2026-09-19. https://stratum.black/study/localities/lake-texoma. Accessed 2026-09-20.
@misc{stratum-lake-texoma,
title = {Lake Texoma},
author = {{Stratum Study}},
howpublished = {\url{https://stratum.black/study/localities/lake-texoma}},
year = {2026},
note = {Locality article, Stratum Study pack 2026.09, as of 2026-09-19; sources: stratum, commons. Accessed 2026-09-20.}
} Citations carry the pack version and the article's as-of date so they resolve to the same text later. The facts themselves belong to the sources listed below; cite those for the science.