Pacific Muck

Pacific Muck

The Pacific Muck is an informal designation for late Pleistocene and Holocene deposits cropping out and found in subsurface in the vicinity of Panamá City, in Panamá Province, Panama. These deposits include black organic-rich mud (muck), lignite, and coarse fossil-rich sand. These sediments and their fossils suggest deposition in coastal habitats, including mangrove swamps, intertidal mudflats, and shallow subtidal environments.

Common fossils

Anadara concinnaAnadara concinna (G. B. Sowerby I, 1833) Anadara nuxAnadara nux (Linnaeus, 1758) Leopecten tumbezensisLeptopecten tumbezensis (Spengler, 1798)
Mexicardia proceraMexicardia procera (Gmelin, 1791) Eucrassatella gibbosaEucrassatella gibbosa (Linnaeus, 1758) Mactrotoma californicaMactrotoma californica (Linnaeus, 1758)
Eurytellina rubescensEurytellina rubescens Linnaeus, 1758 Eurytellina inaequistriataEurytellina inaequistriata (Gmelin, 1791) Tellina tabogensisTellina tabogensis (C. B. Adams, 1845)
Tagelus politusTagelus politus (G. B. Sowerby II, 1841)
Chionopsis amathusiaChionopsis amathusia (R.A. Philippi, 1844)                          . Lamelliconcha paytensisLamelliconcha paytensis (Linnaeus, 1758)
Caryocorbula ovulataCaryocorbula ovulata
(G.B. SowerbyI, 1833)
Tenuicorbula tenuisTenuicorbula tenuis (G.B. SowerbyI, 1833) Naticarius unifasciataNatica unifasciata Lamarck, 1822
Nassarius pagodusNassarius pagodus (Reeve, 1844) Cosmioconcha modestaCosmioconcha modesta (Powys, 1835) Prunum sapotillaPrunum sapotilla (Hinds, 1844)
Strioterebrum glaucumStrioterebrum glaucum (Hinds, 1844)