Lochmanolenellus is an extinct genus of trilobites, fossil marine arthropods, with one small species, L. mexicana.
It lived during the Botomian stage (Olenellus-zone), 522–513 million years ago, in the South-West of the former continent of Laurentia, in what are today Mexico, and the South-Western United States.
The species epithet mexicana refers to Mexico, where the first specimen was found.
[4] Although Laudonia is much more related than Wanneria, L. mexicana must be considered an early representative of the subfamily Bristoliina, that further includes a handful species of the genus Bristolia and Fremontella halli.
[2] L. mexicana occurs in the Lower Cambrian, (lower Olenellus-zone, Botomian) (Puerto Blanco Formation, west side of Proveedora Hills, 7 miles west of Caborca, Sonora, Mexico).