Corrections
This is wrong.
Thirty-nine reviewed groups and seventy-four cues, drawn and written by people who are not standing in your river. Some of it will be wrong, and the drawings are the most likely place — they are authored illustrations, not photographs of your water.
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Overview
Two hinged shell halves that close on the animal. In the hand it is quick: you can see the seam and feel the hinge, and a live one pulls its shell shut. The one two-shelled lookalike, the clam shrimp, has jointed legs and feathery antennae.
Cited for this statement: MDC-FINGERNAIL-CLAMS, MDC-FRESHWATER-MUSSELS. The report names this statement exactly, so nobody has to find it again.
The whole report, exactly as it would travel
HATCH MATCH — CORRECTION REPORT Application: HTH-HM-001 Build: 0.19.1 · f244e24 Carrier schema: 11 Reference reviewed: 2026-09-25 Reported: 2026-11-06 Kind: not stated Subject: Clam (small freshwater bivalve) Record id: hm-clam-forage-v1 Claim: guide.overview.0 Page: /guide/clams WHAT THE REFERENCE SAYS NOW Two hinged shell halves that close on the animal. In the hand it is quick: you can see the seam and feel the hinge, and a live one pulls its shell shut. The one two-shelled lookalike, the clam shrimp, has jointed legs and feathery antennae. Cited sources: MDC-FINGERNAIL-CLAMS, MDC-FRESHWATER-MUSSELS WHAT IS WRONG (not stated) WHAT IT SHOULD SAY (not stated) SOURCE (none given) Written locally. It contains only what the reporter typed — nothing was gathered automatically.
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What happens to it
Checked, or not used.
A correction changes the reference set only after it has been checked against a source. Where a claim cannot be supported either way, the entry loses the claim rather than gaining a hedge — an unsupported sentence removed is a better reference than an unsupported sentence qualified.