Zone B (upper) - Jama Formation: Pliocene, Ecuador

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Turritellidae
Turritella pasada Pilsbry and Olsson 1941
Gastropoda - Neogastropoda - Buccinidae
Phos cocosensis
Gastropoda - Neogastropoda - Columbellidae
Bifurcium bifurcium
Bivalvia - Arcida - Noetiidae
Noetia olssoni
Bivalvia - Pectinida - Pectinidae
Pecten tumbezensis d'Orbigny 1846
recombined as Leptopecten tumbezensis
Bivalvia - Thraciida - Periplomatidae
Periploma planiuscula Sowerby I 1834
recombined as Periploma (Periploma) planiuscula
Bivalvia - Cardiida - Veneridae
Tivela byronensis
Chione (Chionopsis) venadoensis n. sp. Pilsbry and Olsson 1941
Anomalocardia callistoides Pilsbry and Olsson 1941
recombined as Iliochione callistoides
Bivalvia - Cardiida - Mactridae
Mulinia pallida (Broderip and Sowerby 1829)
Mulinia camina n. sp. Pilsbry and Olsson 1941
synonym of Mulinia pallida
Bivalvia - Cardiida - Cardiidae
Cardium (Trigoniocardia) cabopasadum n. sp. Pilsbry and Olsson 1941
Bivalvia - Cardiida - Donacidae
Donax dentiferus
Bivalvia - Cardiida - Tellinidae
Tellina (Quadrans) cognata Adams 1852
recombined as Temnoconcha cognata
Bivalvia - Cardiida - Psammobiidae
Sanguinolaria tellinoides Adams 1850
recombined as Sanguinolaria (Sanguinolaria) tellinoides
see common names

Geography
Country:Ecuador State/province:Manabi
Coordinates: 0.2° North, 80.3° West (view map)
Paleocoordinates:0.0° South, 79.5° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Neogene Epoch:Pliocene
10 m.y. bin:Cenozoic 6
Key time interval:Pliocene
Age range of interval:5.33300 - 2.58800 m.y. ago
Stratigraphy
Formation:Jama
Local section:Puerto Jama Local bed:60 ft
Local order:bottom to top
Stratigraphic resolution:group of beds
Stratigraphy comments: Rests upon Miocene strata with a marked unconformity. Thickness is approximately 15 ft. Collection is from the upper part of Zone B.
Lithology and environment
Primary lithology:concretionary,blue poorly lithified carbonaceous sandstone
Includes fossils?Y
Lithology description: Bluish sands, somewhat lignitic in the upper part, nodular in the lower.
Environment:shoreface
Geology comments: The upper part of this zone comprises mainly beach [shoreface] forms.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:selective quarrying,field collection
Reason for describing collection:taxonomic analysis
Collection method comments: Probably collected by current authors, though text also makes referal to faunal lists by Sheppard (1930) and a collecton of Barker.
Taxonomic list comments:Exhaustive for Mollusca; nomenclature probably outdated though accurate.
Metadata
Database number:51885
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2005-06-29 11:11:12 Last modified:2013-11-25 13:37:23
Access level:group members Released:2006-06-29 11:11:12
Creative Commons license:CC BY
Reference information

Primary reference:

13814. H. A. Pilsbry and A.A. Olsson. 1941. A Pliocene fauna from Western Ecuador. Proceedings of the Natural Sciences of Philadelphia 93:1-79 [A. Miller/A. Hendy/A. Hendy]