Zone I - Canoa Formation: Gelasian, Ecuador

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Tellina (Macaliopsis) crystallina Spengler 1798
Bivalvia - Nuculida - Nuculidae
Nucula declivis Hinds 1843
recombined as Nucula (Nucula) declivis
Bivalvia - Nuculanida - Nuculanidae
Nuculana gibbosa
Nuculana eburnea (Sowerby 1833)
recombined as Saccella eburnea
Nuculana elenensis (Sowerby I 1833)
recombined as Saccella elenensis
SUBSPECIES: N. elenensis pyriformis
Bivalvia - Pectinida - Pectinidae
Pecten ventricosus Sowerby 1842
recombined as Argopecten ventricosus
Pecten (Janira) sericeus Hinds 1844
recombined as Flabellipecten sericeus
Bivalvia - Pectinida - Anomiidae
Anomia peruviana d'Orbigny 1846
Bivalvia - Arcida - Arcidae
Arca (Larkinia) larkini
spelled with current rank as Anadara (Larkinia)
Arca (Scapharca) concinna Sowerby 1833
recombined as Anadara concinna
Bivalvia - Hiatellida - Hiatellidae
Panopaea cf. coquimbensis d'Orbigny 1842
synonym of Panopea abbreviata
Bivalvia - Cardiida - Cardiidae
Laevicardium elenense (Sowerby 1840)
synonym of Laevicardium substriatum
[entered as Laevicardium elenensis]
Cardium (Trigoniocardia) obovale Sowerby 1833
recombined as Apiocardia obovale
Cardium (Trigoniocardia) graniferum Broderip and Sowerby 1829
recombined as Trigoniocardia graniferum
Bivalvia - Cardiida - Tellinidae
Tellina (Angulus) cf. felix
original and current combination Angulus
Tellina (Eurytellina) laplata n. sp. Pilsbry and Olsson 1941
Tellina (Eurytellina) ecuadoriana n. sp. Pilsbry and Olsson 1941
synonym of Tellina (Eurytellina) regia
Macoma grandis (Hanley 1844)
recombined as Psammotreta grandis
Macoma (Macoploma) ecuadoriana n. sp. Pilsbry and Olsson 1941
recombined as Macoma (Psammacoma) ecuadoriana
Macoma lamproleuca (Pilsbry and Lowe 1932)
recombined as Psammacoma lamproleuca
Bivalvia - Cardiida - Solecurtidae
Tagelus (Mesopleura) peruvianus n. sp. Pilsbry and Olsson 1941
recombined as Tagelus peruvianus
Bivalvia - Cardiida - Mactridae
Mactra (Mactrella) alata (Spengler 1802)
recombined as Mactrellona alata
Bivalvia - Cardiida - Veneridae
Chione (Lirophora) mariae (d'Orbigny 1846)
recombined as Lirophora mariae
Dosinia grandis Nelson 1870
synonym of Dosinia ponderosa
Pitar affinis
Gastropoda - Heterostropha - Pyramidellidae
Pyramidella (Lonchaeus) elenensis
Gastropoda - Campanilidae
Cerithium stercusmuscarum Valenciennes 1833
recombined as Cerithium (Thericium) stercusmuscarum
Gastropoda - Neogastropoda - Cancellariidae
Cancellaria (Olivia) cumingiana (Petit de la Saussaye 1844)
recombined as Massyla cumingiana
Gastropoda - Neogastropoda - Conidae
Conus tornatus
Gastropoda - Neogastropoda - Columbellidae
Strombina gibberula (Sowerby 1832)
recombined as Sincola (Dorsina) gibberula
Strombina lanceolata (Sowerby 1832)
Gastropoda - Neogastropoda - Buccinidae
Nassa (Perunassa) ecuadorana n. sp.
original and current combination Perunassa
Gastropoda - Neogastropoda - Olividae
Oliva kaleontina
Gastropoda - Neogastropoda - Marginellidae
Marginella incrassata
Marginella minor Jousseaume 1877
synonym of Volvarina taeniata
Gastropoda - Naticidae
Natica broderipiana R├ęcluz 1844
Polinices sp. Monfort 1810
Polinices panamensis
Gastropoda - Turbinidae
Turbo saxosus Wood 1828
recombined as Turbo (Callopoma) saxosus
Scaphopoda - Dentaliida - Dentaliidae
Dentalium (Tesseracme) tesseragonum
original and current combination Tesseracme
see common names

Country:Ecuador State/province:Manabi
Coordinates: 0.2° North, 80.3° West (view map)
Paleocoordinates:0.1° North, 79.9° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Period:Quaternary Epoch:Pleistocene
Stage:Gelasian 10 m.y. bin:Cenozoic 6
Key time interval:Gelasian
Age range of interval:2.58000 - 1.80000 m.y. ago
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.
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.
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:2020-06-11 14:25:38
Access level:group members Released:2006-06-29 08:13:50
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]