Modiolus capax
fat horsemussel
Conrad, 1837Accepted name in the World Register of Marine Species.WoRMS 506104 ↗
4
Bishop specimens
0
Type specimens
1926
First collected
1939
Last collected
2026
Last seen alive
Two centuries of collecting
The oldest Bishop specimen was collected in 1926 by C.F. Mant; Joseph Swift Emerson (California; Seal Beach; off). The Museum last collected it in 1939; iNaturalist observers have seen it in the wild as recently as August 9, 2026.
From the collection
Alive today
243 research-grade iNaturalist sightings in the wild since 2000. Most recent first.
2026-08-09
Carretera Manzanillo-Puerto Vallarta, MX
(c) Lorena Melissa Nájera Martínez, some rights reserved (CC BY-NC)
2026-07-28
FRMQ+QRW, El Astillero, Nicaragua
(c) Cynthia Tercero, some rights reserved (CC BY-NC-ND)
2026-07-03
Santa Cruz, Guanacaste, CR
(c) jlukkonen, some rights reserved (CC BY-NC)
2026-06-15
Alberto Alvarado Arámburo Carretera Escénica, La Paz, B.C.S., MX
(c) Justin M. Wood, some rights reserved (CC BY-NC)
2026-06-03
Cayucos, CA 93430, USA
(c) disneyfacts, some rights reserved (CC BY-NC)
2026-05-29
Sunset County Beach, Orange County, US-CA, US
(c) dwmcclure, some rights reserved (CC BY-NC)
2026-04-27
Carr Escénica Alberto Alvarado Arámburo, La Paz, B.C.S., MX
(c) Barush Garcia, some rights reserved (CC BY-NC)
2026-04-27
Bahía de la Paz, MX
(c) constanzapatino, some rights reserved (CC BY-NC)