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Title 50

Displaying title 50, up to date as of 7/10/2026. Title 50 was last amended 7/10/2026.
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Title 50Wildlife and FisheriesPart / Section
Chapter IVJoint Regulations (United States Fish and Wildlife Service, Department of the Interior and National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Department of Commerce); Endangered Species Committee Regulations400 – 499
Subchapter A400 – 424
Part 424Listing Endangered and Threatened Species and Designating Critical Habitat424.01 – 424.21
Subpart BRevision of the Lists424.10 – 424.21
§ 424.10General.
§ 424.11Factors for listing, delisting, or reclassifying species.
§ 424.12Criteria for designating critical habitat.
§ 424.13Sources of information and relevant data.
§ 424.14Petitions.
§ 424.15Notices of review.
§ 424.16Proposed rules.
§ 424.17Time limits and required actions.
§ 424.18Final rules—general.
§ 424.19Impact analysis and exclusions from critical habitat.
§ 424.20Emergency rules.
§ 424.21Periodic review.