sourceTaxonName: Physa
sourceTaxonPath: Animalia | Mollusca | Gastropoda | Physidae | Physa
targetTaxonName: gravel
localityName: 1 mi. W of Valley Park, Williams Creek tributary of Meramec River, the first creek W of SR141 on I-44, 1 mi. W of SR141, under I-44 bridge