Zone I - Canoa Formation: Gelasian, Ecuador

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Nuculanida - Nuculanidae
unclassified
Bivalvia - Nuculida - Nuculidae
Nucula declivis Hinds 1843
Bivalvia - Nuculanida - Nuculanidae
Nuculana eburnea (Sowerby 1833)
Bivalvia - Hiatellida - Hiatellidae
Bivalvia - Cardiida - Solecurtidae
Tagelus (Mesopleura) peruvianus n. sp. Pilsbry and Olsson 1941
Bivalvia - Cardiida - Tellinidae
Tellina (Eurytellina) ecuadoriana n. sp. Pilsbry and Olsson 1941
Macoma lamproleuca (Pilsbry and Lowe 1932)
Macoma (Macoploma) ecuadoriana n. sp. Pilsbry and Olsson 1941
Macoma grandis (Hanley 1844)
Bivalvia - Cardiida - Cardiidae
Laevicardium elenense (Sowerby 1840)
[entered as Laevicardium elenensis]
Cardium (Trigoniocardia) graniferum Broderip and Sowerby 1829
Bivalvia - Cardiida - Mactridae
Mactra (Mactrella) alata (Spengler 1802)
Bivalvia - Cardiida - Veneridae
Chione (Lirophora) mariae (d'Orbigny 1846)
Dosinia grandis Nelson 1870
Bivalvia - Pectinida - Pectinidae
Pecten ventricosus Sowerby 1842
Bivalvia - Pectinida - Anomiidae
Anomia peruviana d'Orbigny 1846
Bivalvia - Arcida - Arcidae
Scaphopoda - Dentaliida - Dentaliidae
Gastropoda - Turbinidae
Turbo saxosus Wood 1828
Gastropoda - Neogastropoda - Cancellariidae
Cancellaria (Olivia) cumingiana (Petit de la Saussaye 1844)
Gastropoda - Neogastropoda - Marginellidae
Marginella minor Jousseaume 1877
Gastropoda - Neogastropoda - Columbellidae
Strombina lanceolata (Sowerby 1832)
Strombina gibberula (Sowerby 1832)
Gastropoda - Neogastropoda - Buccinidae
Gastropoda - Neogastropoda - Olividae
Gastropoda - Neogastropoda - Conidae
Conus tornatus Broderip 1833
Gastropoda - Naticidae
Polinices sp. Monfort 1810
Natica broderipiana Récluz 1844
Gastropoda - Campanilidae
Cerithium stercusmuscarum Valenciennes 1833
Gastropoda - Heterostropha - Pyramidellidae
see common names

Geography
Country:Ecuador State/province:Manabi
Coordinates: 0.2° North, 80.3° West (view map)
Paleocoordinates:0.4° North, 79.8° West (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period: Quaternary Epoch: Pleistocene
Stage: Gelasian 10 m.y. bin: Cenozoic 6
Key time interval: Gelasian
Age range of interval: 2.58 - 1.8 m.y. ago
Stratigraphy
Formation:Canoa
Local section:Quebrada Mangle Local bed:56 ft
Local order:bottom to top
Stratigraphic resolution:group of beds
Stratigraphy comments: As exposed in the Quebrada Mangle section, the Canoa Formation has a thickness of around 125 feet, comprising Pliocene through Pleistocene marine and non-marine strata. The collection is from the Zone I (Tagelus Zone), which has a thickness of around 12 ft.
Lithology and environment
Primary lithology:shelly/skeletal,blue unlithified sandy claystone
Includes fossils?Y
Lithology description: Very fossiliferous blue, sandy clays.
Environment:coastal indet.
Geology comments: No environmental data reported. Presumably shallow water.
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
Also known as:Tagelus Zone
Database number:51879
Authorizer:A. Hendy, A. Miller Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2005-06-29 08:13:50 Last modified:2025-02-22 15:12:02
Access level:group members Released:2006-06-29 08:13:50
Creative Commons license:CC0
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]