Quebrada Camarones [Esmeraldas Fm] (Pliocene of Ecuador)

Where: Manabi, Ecuador (1.0° N, 79.6° W: paleocoordinates 0.7° N, 78.8° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Esmeraldas Formation, Early/Lower Pliocene (5.3 - 3.6 Ma)

• AGE: Stated to be Late Miocene in text; Early Pliocene following Beu (2010). COMMENTS: thought to be equivalent to the Borbon formation of the Rio Santiago section, resting unconformably on top of conglomerate beds containing Turritella altilira and other Miocene fossils probably not greater than 300 meters in thickness overlain unconformably by massive to wellbedded brown sandstones

•The beds at Quebrada Camarones have a low notherly to nearly horizontal dip, the cutbanks showing bare exposures sometimes rising as high as 30 feet

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified, fine-grained, brown, yellow sandstone and lithified sandstone

• deep water fauna with a few shallow water forms that were badly worn, indicating transportation, while deep-water fauna were in perfect condition, suggesting turbidity currents.
• thin bedded to massive tuffaceous mudstones sometimes with interbeds of soft sandstones. small or medium-sized rounded pebbles are scattered throughout the formation, or more rarely concentrated into minor beds or seams of conglomerate. Large calcareous concretions, some rounded or with an irregular rootlike shape, generally with hollow centers are common at many places. The beds are highly foraminiferal, with pelagic types, often pure enough to form a foraminiferal oozelike sediment. On the fresh surface of the rock platform, the formation is hard, and of a gray-black or dark olive-green color.

Size class: macrofossils

Collection methods: surface (in situ),

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 60771: authorized by Arnold Miller, entered by Kate Bulinski on 22.05.2006, edited by Austin Hendy

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Nuculanida - Nuculanidae
"Nuculana (Saccella) ornata" = Saccella ornata
"Nuculana (Saccella) ornata" = Saccella ornata d'Orbigny 1845 pointed nut clam
 Nuculida - Nuculidae
Nucula (Nucula) mirada Olsson 1964 nut clam
new species
 Pectinida - Limidae
"Lima (Acesta) hertleini" = Acesta
"Lima (Acesta) hertleini" = Acesta file clam
new species
 Pectinida - Pectinoidae
"Pecten (Euvola) cf. bowdenensis" = Euvola bowdenensis, "Chlamys woodringi" = Argopecten woodringi
"Pecten (Euvola) cf. bowdenensis" = Euvola bowdenensis Dall 1898 scallop
"Chlamys woodringi" = Argopecten woodringi Spieker 1922 calico scallop
new species
 Arcida - Limopsidae
 Arcida - Arcidae
Arca (Arca) suspecta Olsson 1964 ark
new species
 Carditida - Astartidae
Lirotarte paphia clam
new species
 Carditida - Crassatellidae
Crassinella coxa clam
new species
 Cardiida - Cardiidae
Microcardium ecuadoriense cockle
new species
 Cardiida - Tellinidae
"Moerella yapa" = Tellina (Moerella), "Phyllodina phragmites" = Tellina (Phyllodina), "Psammacoma tagua" = Macoma (Psammacoma), "Moerella meropsis" = Tampaella meropsis, Psammotreta muisna
"Moerella yapa" = Tellina (Moerella) tellin clam
new species
"Phyllodina phragmites" = Tellina (Phyllodina) tellin clam
new species
"Psammacoma tagua" = Macoma (Psammacoma) tellin clam
new species
"Moerella meropsis" = Tampaella meropsis Dall 1900 tellin clam
Psammotreta muisna tellin clam
new species
 Cardiida - Veneridae
Pitar (Pitar) hera venus clam
new species
 Lucinida - Lucinidae
"Myrtaea (Laevimytraea) inconspicus" = Myrtea, "Lucina (Callucina) camaronensis" = Callucina
"Myrtaea (Laevimytraea) inconspicus" = Myrtea clam
new species
"Lucina (Callucina) camaronensis" = Callucina clam
new species
Scaphopoda
 Dentaliida - Dentaliidae
Gastropoda
 Opisthobranchia - Cylichnidae
Cylichna teres snail
new species
 Sorbeoconcha - Ficidae
Ficus perplexa n. sp., Ficus lanzi n. sp.
Ficus perplexa n. sp. fig shell
Ficus lanzi n. sp. Olsson 1964 fig shell
 Neogastropoda - Costellariidae
Fusiturricula orthocaula ribbed mitre
new species
Fusiturricula oreodoxa ribbed mitre
new species
Fusiturricula fusinella Dall 1908 ribbed mitre
 Neogastropoda - Marginellidae
Prunum (Prunum) godini n. sp. Olsson 1964 margin shell
 Neogastropoda - Volutidae
"Calliotectum fischeri n. sp." = Teremachia fischeri
"Calliotectum fischeri n. sp." = Teremachia fischeri Olsson 1964 volute
 Neogastropoda - Harpidae
Harpa crenata2 Swainson 1822 snail
 Neogastropoda - Cancellariidae
"Cancellaria (Hertleinia) marksi n. sp." = Hertleinia marksi, Cancellaria (Cancellaria) esmeralda, "Cancellaria (Charcolleria) terryi" = Massyla terryi, "Trigonostoma thisbe n. sp." = Axelella thisbe, Cancellaria (Euclia) serrata
"Cancellaria (Hertleinia) marksi n. sp." = Hertleinia marksi Olsson 1964 snail
Cancellaria (Cancellaria) esmeralda Olsson 1964 snail
new species
"Cancellaria (Charcolleria) terryi" = Massyla terryi Olsson 1942 snail
"Trigonostoma thisbe n. sp." = Axelella thisbe Olsson 1964 snail
Cancellaria (Euclia) serrata Olsson 1964 snail
new species
 Neogastropoda - Olividae
 Neogastropoda - Cochlespiridae
"Ancistrosyrinx cedonulli" = Cochlespira (Ancistrosyrinx) cedonulli Reeve 1843 snail
reevi
Aforia ecuadoriana Olsson 1964 aforia
new species
 Neogastropoda - Drilliidae
Agladrillia gracilis snail
new species
Agladrillia minys snail
new species
"Hindsiclava militaris" = Crassispira (Hindsiclava) militaris Hinds, in Reeve 1843 snail
 Neogastropoda - Raphitomidae
Thatcheria (Conicheria) ecuadoriana Olsson 1964 snail
new species
 Neogastropoda - Clathurellidae
Glyphostoma drangai snail
new species
Glyphostoma annae snail
new species
Glyphostoma gracilis snail
new species
 Neogastropoda - Conidae
Conus camaronus cone shell
new species
Conus cacuminatus Spieker 1922 cone shell
Conus cf. imitator Brown and Pilsbry 1911 cone shell
lius
Conus cf. granozonatus Guppy 1866 cone shell
 Neogastropoda - Pseudomelatomidae
Buridrillia rehderi snail
new species
Buridrillia weberi snail
new species
 Neogastropoda - Terebridae
Strioterebrum camaronense, "Strioterebrum guanabanum" = Strioterebrum guanabana
Strioterebrum camaronense auger snail
new species
"Strioterebrum guanabanum" = Strioterebrum guanabana Olsson 1942 auger snail
 Neogastropoda - Turridae
Scobinella ecuadoriana Olsson 1964 turrid
new species
Lepicythara camaronensis Olsson 1964 turrid
new species
Gemmula arundia turrid
new species
Polystira fargoi turrid
new species
Polystira oxytropis Sowerby 1834 turrid
ecuadoriana new subspecies
 Neogastropoda - Nassariidae
Nassarius (Uzita) hylus n. sp. Olsson 1964 snail
 Neogastropoda - Columbellidae
Anachis (Anachis) laudabilis n. sp., Anachis (Alia) proba n. sp., "Strombina (Cotonopsis) esmeraldensis n. sp." = Cotonopsis (Cotonopsis) esmeraldensis
Anachis (Alia) proba n. sp. snail
"Strombina (Cotonopsis) esmeraldensis n. sp." = Cotonopsis (Cotonopsis) esmeraldensis Olsson 1964 snail
 Neogastropoda - Buccinidae
Cantharus scissus n. sp. true whelk
Metaphos pacificus n. sp. true whelk
Metaphos scillus n. sp. true whelk
Metaphos calathus n. sp. true whelk
"Kelletia ecuadoriana n. sp." = Siphonalia (Kelletia) true whelk
Neosconsia ecuadoriana n. sp. Olsson 1964 true whelk
Antillophos abundans n. sp. true whelk
 Neogastropoda - Fasciolariidae
 Neogastropoda - Mitridae
"Mitra (Subcancilla) musa n. sp." = Subcancilla
"Mitra (Subcancilla) musa n. sp." = Subcancilla mitre shell
 Sorbeoconcha - Xenophoridae
Xenophora dilecta carrier shell
 Sorbeoconcha - Cassidae
Echinophoria woodringi Olsson 1964 snail
 Sorbeoconcha - Naticidae
"Natica (Naticarius) othella" = Naticarius moon snail
SUBSPECIES: Natica (Naticarius) othella burica
Natica (Naticarius) cf. scethra Dall 1908 moon snail
Stigmaulax elenae moon snail
 Sorbeoconcha - Capulidae
Capulus pacificus n. sp. snail
 Epitonioidea - Epitoniidae
Cirsotrema togatum n. sp.1 Hertlein and Strong 1951 wentletrap
Sthenorytis hertelini n. sp. wentletrap
Scalina ferminiana Dall 1908 wentletrap
 Pseudomelanoidea - Pseudomelaniidae
Compsodrillia pacifica snail
new species
 Cerithioidea - Turritellidae
Turritella sp. Lamarck 1799 turret shell
 Trochoidea - Trochidae
Calliostoma dryope n. sp. top snail
Calliostoma nicolum n. sp. top snail
Calliostoma tegulum n. sp. Olsson 1964 top snail
 Seguenzioidea - Eucyclidae
Bathybembix dalliana n. sp. Olsson 1964 snail
 Lepetellida - Fissurellidae