PBDB Collection

Zone B (lower) - Jama Formation (Pliocene of Ecuador)

Where: Manabi, Ecuador (0.2° N, 80.3° W: paleocoordinates 0.0° S, 79.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Jama Formation, Pliocene (5.3 - 2.6 Ma)

• Rests upon Miocene strata with a marked unconformity. Thickness is approximately 15 ft. Collection is from the lower part of Zone B.

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, concretionary, blue sandstone

• The lower part of this zone comprises mainly deeper water [offshore?] forms.

• Bluish sands, somewhat lignitic in the upper part, nodular in the lower.

Size class: macrofossils

Collection methods: quarrying,

• Probably collected by current authors, though text also makes referal to faunal lists by Sheppard (1930) and a collecton of Barker.

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 51886: authorized by Austin Hendy, entered by Austin Hendy on 29.06.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for Mollusca; nomenclature probably outdated though accurate.

Show authors, comments, and common names

Bivalvia
Arcida - Arcidae	"Arca (Scapharca) obesa" = Anadara obesa, "Arca (Cunearca) aequitorialis" = Anadara (Cunearca), "Arca (Cunearca) zorritoensis" = Anadara (Cunearca) zorritoensis, "Arca (Argina) brevifrons" = Lunarca brevifrons "Arca (Scapharca) obesa" = Anadara obesa Sowerby 1833 ark "Arca (Cunearca) aequitorialis" = Anadara (Cunearca) ark "Arca (Cunearca) zorritoensis" = Anadara (Cunearca) zorritoensis Spieker 1922 ark [entered as Arca (Cunearca) zorritensis] "Arca (Argina) brevifrons" = Lunarca brevifrons Sowerby I 1833 ark
Arcida - Noetiidae	Noetia reversa Noetia reversa Sowerby 1833 clam Subspecies: Noetia reversa peruviana; new subspecies
Ostreida - Ostreidae	"Ostrea megodon" = Undulostrea megodon "Ostrea megodon" = Undulostrea megodon Hanley 1846 oyster
Pectinida - Anomiidae	Placunanomia cumingii, Anomia peruviana Placunanomia cumingii Broderip 1832 scallop [entered as Placunanomia cumingi] Anomia peruviana d'Orbigny 1846 jingle
Pectinida - Pectinoidae	Pecten ventrcosus, Pecten nelsoni Pecten ventrcosus scallop Pecten nelsoni scallop
Carditida - Crassatellidae	"Eucrassatella gibbosa" = Hybolophus gibbosus "Eucrassatella gibbosa" = Hybolophus gibbosus Sowerby 1832 clam Subspecies: Eucrassatella gibbosa tucilla
Cardiida - Veneridae	Pitar salanga, Cyclinella galera n. sp., Clementia (Egesta) solida, "Chione (Lirophora) gorgona n. sp." = Lirophora mariae, "Anomalocardia callistoides n. sp." = Iliochione callistoides, Chione (Chionopsis) jamaniana n. sp. Pitar salanga Pilsbry and Olsson 1941 venus clam Cyclinella galera n. sp. Pilsbry and Olsson 1941 venus clam Clementia (Egesta) solida venus clam "Chione (Lirophora) gorgona n. sp." = Lirophora mariae d'Orbigny 1846 venus clam "Anomalocardia callistoides n. sp." = Iliochione callistoides Pilsbry and Olsson 1941 venus clam Chione (Chionopsis) jamaniana n. sp. Pilsbry and Olsson 1941 venus clam
Cardiida - Mactridae	"Mactra (Micromactra) atacama n. sp." = Mactrotoma angusta, "Mactra (Mactrella) alata" = Mactrellona alata, Harvella elegans "Mactra (Micromactra) atacama n. sp." = Mactrotoma angusta Reeve 1854 surfclam "Mactra (Mactrella) alata" = Mactrellona alata Spengler 1802 clam Harvella elegans Sowerby 1825 clam Subspecies: Harvella elegans tucilla
Cardiida - Anatinellidae	"Labiosa undulata" = Raeta undulata "Labiosa undulata" = Raeta undulata Gould 1851 clam
Cardiida - Cardiidae	Cardium (Trachycardium) ballenium n. sp., "Cardium (Trigoniocardia) spiekeri" = Apiocardia spiekeri, "Laevicardium pedernalense n. sp." = Laevicardium substriatum Cardium (Trachycardium) ballenium n. sp. Pilsbry and Olsson 1941 cockle "Cardium (Trigoniocardia) spiekeri" = Apiocardia spiekeri Hanna and Israelsky 1925 cockle "Laevicardium pedernalense n. sp." = Laevicardium substriatum Conrad 1837 cockle
Cardiida - Semelidae	Semele laevis Semele laevis Sowerby 1833 clam
Cardiida - Tellinidae	Tellina (Eurytellina) panamanensis, Tellina (Eurytellina) prora, Tellina (Macaliopsis) aequizonata n. sp., Macoma plebeia Tellina (Eurytellina) panamanensis tellin clam Tellina (Eurytellina) prora Hanley 1844 tellin clam Tellina (Macaliopsis) aequizonata n. sp. Pilsbry and Olsson 1941 tellin clam Macoma plebeia tellin clam
Cardiida - Solecurtidae	Solecurtus broggii Solecurtus broggii Pilsbry and Olsson 1941 clam
Pholadida - Corbulidae	"Corbula ovulata" = Caryocorbula ovulata "Corbula ovulata" = Caryocorbula ovulata Sowerby 1835 clam
Gastropoda
Heterostropha - Architectonicidae	"Architectonica nobilis" = Architectonica nobilis, "Architectonica sexlinearis" = Architectonica nobilis "Architectonica nobilis" = Architectonica nobilis Röding 1798 sundial "Architectonica sexlinearis" = Architectonica nobilis Röding 1798 sundial
Pseudomelanoidea - Pseudomelaniidae	Crassispira guayana n. sp. Crassispira guayana n. sp. Pilsbry and Olsson 1941 snail
Cerithioidea - Turritellidae	Turritella pasada n. sp. Turritella pasada n. sp. Pilsbry and Olsson 1941 turret shell
Sorbeoconcha - Naticidae	Polinices panamensis, Polinices rapulum, Natica broderipana, Natica marochiensis Polinices panamensis moon snail Polinices rapulum moon snail Natica broderipana moon snail Natica marochiensis Gmelin 1791 moon snail
Sorbeoconcha - Ficidae	Ficus ventricosus Ficus ventricosus fig shell
Neogastropoda - Muricidae	Eupleura muriciformis, Phyllonotus brassica Eupleura muriciformis Broderip 1833 murex snail Phyllonotus brassica murex snail
Neogastropoda - Columbellidae	"Strombina recurva" = Strombina (Recurvina) recurva, "Strombina ecuadoriana n. sp." = Strombina (Sinuina) ecuadoriana, Aesopus (Glyptaesopus) perornatus n. sp. "Strombina recurva" = Strombina (Recurvina) recurva Sowerby 1832 snail "Strombina ecuadoriana n. sp." = Strombina (Sinuina) ecuadoriana Pilsbry and Olsson 1941 snail Aesopus (Glyptaesopus) perornatus n. sp. Pilsbry and Olsson 1941 dovesnail
Neogastropoda - Buccinidae	Metula amosi, Hanetia ecuadorensis n. sp., Hanetia boggsi n. sp., Hanetia cymioides n. sp., Northia northiae, Phos cf. gaudens, Nassa tinosa n. sp., Cymatophos galerus Metula amosi Vanatta 1913 true whelk Hanetia ecuadorensis n. sp. Pilsbry and Olsson 1941 true whelk Hanetia boggsi n. sp. Pilsbry and Olsson 1941 true whelk Hanetia cymioides n. sp. Pilsbry and Olsson 1941 true whelk Northia northiae Gray in Griffith & Pidgeon 1833 true whelk Phos cf. gaudens true whelk Nassa tinosa n. sp. Pilsbry and Olsson 1941 true whelk Cymatophos galerus Pilsbry and Olsson 1941 true whelk
Neogastropoda - Nassariidae	"Nassa (Arcularia) puntablancoensis" = Nassarius (Arcularia), Tritiaria ecuadoriana n. sp. "Nassa (Arcularia) puntablancoensis" = Nassarius (Arcularia) snail Tritiaria ecuadoriana n. sp. Pilsbry and Olsson 1941 snail
Neogastropoda - Terebridae	Terebra (Terebra) elena n. sp., "Terebra (Strioterebrum) cracilenta" = Strioterebrum, Terebra (Strioterebrum) tumaca n. sp., Terebra (Strioterebrum) cuenca n. sp. Terebra (Terebra) elena n. sp. Pilsbry and Olsson 1941 auger snail "Terebra (Strioterebrum) cracilenta" = Strioterebrum auger snail Terebra (Strioterebrum) tumaca n. sp. Pilsbry and Olsson 1941 auger snail Terebra (Strioterebrum) cuenca n. sp. Pilsbry and Olsson 1941 auger snail
Neogastropoda - Conidae	Conus regularis, Conus cacuminatus, Conus pyriformis Conus regularis Sowerby 1841 cone shell Conus cacuminatus Spieker 1922 cone shell Conus pyriformis Reeve 1843 cone shell
Neogastropoda - Olividae	"Oliva angulata" = Oliva (Oliva) incrassata, Oliva spicata, Olivella semistriata "Oliva angulata" = Oliva (Oliva) incrassata Lightfoot 1786 olive snail Oliva spicata Durham 1950 olive snail Olivella semistriata olive snail
Neogastropoda - Cancellariidae	Cancellaria (Cancellaria) ventricosa, "Cancellaria (Cancellaria) yolandia n. sp." = Cancellaria yolandia, "Cancellaria (Peruclia) solida" = Pyruclia solida, "Cancellaria (Peruclia) bulbulus" = Cancellaria (Pyruclia) bulbulus, Cancellaria (Euclia) harpiformis n. sp. Cancellaria (Cancellaria) ventricosa snail "Cancellaria (Cancellaria) yolandia n. sp." = Cancellaria yolandia Pilsbry and Olsson 1941 snail "Cancellaria (Peruclia) solida" = Pyruclia solida Sowerby 1832 snail "Cancellaria (Peruclia) bulbulus" = Cancellaria (Pyruclia) bulbulus Sowerby 1832 snail Cancellaria (Euclia) harpiformis n. sp. Pilsbry and Olsson 1941 snail
Sorbeoconcha - Cypraeidae	"Cypraea cayapa n. sp." = Muracypraea cayapa "Cypraea cayapa n. sp." = Muracypraea cayapa Pilsbry and Olsson 1941 cowry
Sorbeoconcha - Personidae	"Distorsio decussatus" = Distorsio decussata "Distorsio decussatus" = Distorsio decussata Valenciennes 1832 snail
Sorbeoconcha - Cassidae	Semicassis centiquadratus Semicassis centiquadratus snail
Sorbeoconcha - Bursidae	"Bursa nana" = Marsupina nana "Bursa nana" = Marsupina nana Broderip and Sowerby 1829 frog shell
Sorbeoconcha - Tonnidae	Malea ringens Malea ringens Swainson 1822 tun shell
Sorbeoconcha - Campanilidae	"Cerithium stercusmuscarum" = Cerithium (Thericium) stercusmuscarum "Cerithium stercusmuscarum" = Cerithium (Thericium) stercusmuscarum Valenciennes 1833 snail
Neotaenioglossa - Calyptraeidae	Crepidula sp., "Crucibulum (Dispotaea) imbricatum" = Crucibulum (Dispotaea) imbricata Crepidula sp. Lamarck 1799 slipper shell "Crucibulum (Dispotaea) imbricatum" = Crucibulum (Dispotaea) imbricata Sowerby 1824 slipper shell