Telembi [Angostura Fm] (Miocene of Ecuador)

Where: Esmeraldas, Ecuador (0.8° N, 78.9° W)

• Paleocoordinates: 1.3° N, 76.5° W (Wright 2013)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Angostura Formation (Santiago Group), Late/Upper Miocene (11.6 - 5.3 Ma)

• Lowest of the Santiago Miocene section, lying transgressivlely unconformably on the Rio de Oro and Playa Rica shales. 150 meters in thickness

• formation-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, coarse-grained sandstone and conglomerate

• Near-shore clastic sediments deposited along the inner shelf zone at depths of 100 fathoms or less.
• The Angostura formation is comprised primarily of coarse wsandstones and beds of conglomerates, about 150 meters in thickness. The formation is resistant to erosion and is largely barren, but at a few places there are lenses or interbeds filled with finely preserved fossils.

Size class: macrofossils

Collection methods: Faunal list observed from the fossils found in a fossiliferous lense interbedded with sandstones and conglomerates.

Primary reference: A. A. Olsson. 1964. Neogene Mollusks From Northwestern Ecuador [A. Miller/K. Bulinski]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 60662: authorized by Arnold Miller, entered by Kate Bulinski on 19.05.2006, edited by Austin Hendy

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Carditida - Crassatellidae
Eucrassatella (Hybolophus) berryi telemba n. ssp.
Gastropoda
 Heterostropha - Architectonicidae
Architectonica (Architectonica) nobilis nobilis
Bivalvia
 Lucinida - Lucinidae
Lucina (Lucinisca) arrogans n. sp.
 Cardiida - Cardiidae
Trigoniocardia (Trigoniocardia) hannai
 Cardiida - Tellinidae
"Eurytellina (Eurytellina) cayapa n. sp." = Tellina (Eurytellina), "Tellinidella sp." = Tellina (Tellinidella)
"Eurytellina (Eurytellina) cayapa n. sp." = Tellina (Eurytellina) tellin clam
"Tellinidella sp." = Tellina (Tellinidella) tellin clam
 Cardiida - Semelidae
"Semele cf. costaricensis" = Semele laevis costaricensis, Ervilia meridionalis n. sp.
"Semele cf. costaricensis" = Semele laevis costaricensis Olsson 1922 clam
 Cardiida - Chamidae
Pseudochama sp.
Pseudochama sp. Odhner 1917 jewel box
 Cardiida - Veneridae
"Chione (Lirophora) tembla n. sp." = Lirophora (Lirophora) falconensis, Lamelliconcha thompsoni
"Chione (Lirophora) tembla n. sp." = Lirophora (Lirophora) falconensis Hodson et al. 1927 venus clam
 Cardiida - Kelliellidae
"Alveinus abundans n. sp." = Alveinus rotundus
"Alveinus abundans n. sp." = Alveinus rotundus Dall 1900 clam
 Arcida - Noetiidae
Noetia (Noetia) ecuadoria
 Arcida - Arcidae
"Lunarca cueva n. sp." = Anadara (Lunarca), Anadara (Cunearca) telemba n. sp.
"Lunarca cueva n. sp." = Anadara (Lunarca) ark
Anadara (Cunearca) telemba n. sp. Olsson 1964 ark
 Nuculanida - Nuculanidae
"Nuculana (Saccella) fabalis n. sp." = Saccella fabalis
"Nuculana (Saccella) fabalis n. sp." = Saccella fabalis Olsson 1964 pointed nut clam
Gastropoda
 Cerithioidea - Turritellidae
Turritella gatunensis, Turritella (Bactrospira) acosta n. sp., Turritella (Broderiptella) bifastigata, Turritella prenuncia
Turritella gatunensis Conrad 1857 turret shell
Turritella (Bactrospira) acosta n. sp. Olsson 1964 turret shell
Turritella (Broderiptella) bifastigata Nelson 1870 turret shell
Turritella prenuncia Spieker 1922 turret shell
 Sorbeoconcha - Cypraeidae
"Cypraea (Pseudozonaria) telembiensis n. sp." = Pseudozonaria telembiensis
"Cypraea (Pseudozonaria) telembiensis n. sp." = Pseudozonaria telembiensis Olsson 1964 cowry
 Sorbeoconcha - Cassidae
Sconsia grayi
Sconsia grayi Adams 1855 snail
 Neogastropoda - Mitridae
Mitra (Subcancilla) ecuadoriana n. sp.
Mitra (Subcancilla) ecuadoriana n. sp. Olsson 1964 mitre shell
 Neogastropoda - Columbellidae
"Strombina (Strombina) pigea n. sp." = Sincola (Dorsina) pigea, Strombina (Sincolo) harbisoniae n. sp., "Strombina (Strombina) striatocostata" = Strombina (Strombina) colinensis, Strombinella druidwilsoni n. sp.
"Strombina (Strombina) pigea n. sp." = Sincola (Dorsina) pigea Olsson 1964 dove shell
"Strombina (Strombina) striatocostata" = Strombina (Strombina) colinensis Hodson 1931 dove shell
Strombinella druidwilsoni n. sp. dove shell
 Neogastropoda - Nassariidae
Nassarius repetiti n. sp., Nassarius (Uzita) mastus n. sp.
Nassarius repetiti n. sp. snail
 Neogastropoda - Melongenidae
Melongena consors
Melongena consors Sowerby 1850 snail
 Neogastropoda - Buccinidae
Gemophos cayapus n. sp., Northia (Northia) ecuadoriana n. sp., Perunassa ursa n. sp., "Northia (Nicema) noctua n. sp." = Nicema, Strombinophos equadorianus n. sp., Strombinophos telembus n. sp., Cymatophos pilsbryi n. sp., Hindsia dalli n. sp.
Gemophos cayapus n. sp. true whelk
Perunassa ursa n. sp. true whelk
"Northia (Nicema) noctua n. sp." = Nicema true whelk
Strombinophos equadorianus n. sp. true whelk
Strombinophos telembus n. sp. true whelk
Cymatophos pilsbryi n. sp. true whelk
Hindsia dalli n. sp. true whelk
 Neogastropoda - Muricidae
Eupleura thompsoni
Eupleura thompsoni Woodring 1959 murex snail
 Neogastropoda - Olividae
Agaronia burchi n. sp., Oliva (Ispidula) cayapa n. sp., Olivella (Niteoliva) marksi, Olivella (Olivella) telembiensis n. sp.
Agaronia burchi n. sp. olive snail
Oliva (Ispidula) cayapa n. sp. olive snail
Olivella (Niteoliva) marksi Olsson 1956 olive snail
 Neogastropoda - Turridae
Polystira andersoni n. sp.
Polystira andersoni n. sp. turrid
 Neogastropoda - Drilliidae
Fusiturricula latira n. sp., "Agladrillia lelandi n. sp." = Clathrodrillia lelandi
"Agladrillia lelandi n. sp." = Clathrodrillia lelandi Olsson 1964 snail
 Neogastropoda - Conidae
Conus riosantiagensis n. sp., Conus marksi n. sp.
Conus riosantiagensis n. sp. cone shell
Conus marksi n. sp. cone shell
 Neogastropoda - Clathurellidae
Glyphostoma katherinae n. sp.
 Neogastropoda - Terebridae
Hastula woodringi n. sp., "Terebra (Paraterebra) cf. robusta" = Terebra (Panaterebra) robusta, "Terebra (Myurellina) subsulcifera" = Terebra (Oreoterebra) subsulcifera, Strioterebrum telembiense n. sp., Strioterebrum gatunensis, Strioterebrum indocayapum n. sp.
Hastula woodringi n. sp. auger snail
"Terebra (Paraterebra) cf. robusta" = Terebra (Panaterebra) robusta Hinds 1844 auger snail
"Terebra (Myurellina) subsulcifera" = Terebra (Oreoterebra) subsulcifera Brown and Pilsbry 1911 auger snail
Strioterebrum telembiense n. sp. auger snail
Strioterebrum gatunensis Toula 1908 auger snail
Strioterebrum indocayapum n. sp. Olsson 1964 auger snail
 Neogastropoda - Cancellariidae
Cancellaria (Cancellaria) metuloides n. sp., Cancellaria (Cancellaria) xenia n. sp., "Cancellaria (Euclia) maldonadoi n. sp." = Euclia maldonadoi, Cancellaria (Euclia) fragosa n. sp., Cancellaria (Massula) jadisi n. sp., "Cancellaria (Pyruclia) telemba n. sp." = Pyruclia telemba, "Cancellaria (Pyruclia) pycta n. sp." = Pyruclia pycta, "Cancellaria (Hertleinia) angosturana" = Hertleinia angosturana
Cancellaria (Cancellaria) metuloides n. sp. Olsson 1964 snail
Cancellaria (Cancellaria) xenia n. sp. Olsson 1964 snail
"Cancellaria (Euclia) maldonadoi n. sp." = Euclia maldonadoi Olsson 1964 snail
Cancellaria (Euclia) fragosa n. sp. Olsson 1964 snail
Cancellaria (Massula) jadisi n. sp. Olsson 1964 snail
"Cancellaria (Pyruclia) telemba n. sp." = Pyruclia telemba Olsson 1964 snail
"Cancellaria (Pyruclia) pycta n. sp." = Pyruclia pycta Olsson 1964 snail
"Cancellaria (Hertleinia) angosturana" = Hertleinia angosturana Marks 1949 snail
 Heterostropha - Architectonicidae
Architectonica (Pseudotorinia) eurybis n. sp.