Zone I - Canoa Formation: Gelasian, Ecuador

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