Community sb facies (Punta Ballena Member) (Pleistocene of Ecuador)

Where: Manabi, Ecuador (0.2° S, 80.3° W: paleocoordinates 0.3° S, 79.9° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Punta Ballena Member (Jama Formation), Early/Lower Pleistocene (2.6 - 0.8 Ma)

• While not specified, it appears that the collection is a composite of several bulk samples showing similar taphonomic characteristics and stratal position. Early Pleistocene in age (MOI stages 35-50). The Punta Ballena Member of the Jama Formation is overlain by the El Matal Member (60 m thick, fluvial) and underlain by the Punta Pasa Borracho Member (20 m thick, marine). The Punta Ballena Member is 100 m thick, mixed fluvial and marine. The age of the Jama Formation is constrained by 40Ar/39Ar date of tephra beds.

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; unlithified, medium-grained, coarse, shelly/skeletal sandstone

• Inner subtidal setting (20-30m)
• Mud-supported, show gradational upper contact from shell-rich to shell-poor, fine-grained lithofacies

Size class: macrofossils

Preservation: original aragonite, original calcite

Collection methods: bulk, sieve,

• Unknown respository for material; possibly either Universita di Camerino or Universita di Pisa, Italy; faunal list is a composite of at least two bulk collections.

Primary reference: G. Cantalamessa, C. Di Celma, and L. Ragaini. 2005. Sequence stratigraphy of the Punta Ballena Member of the Jama Formation (Early Pleistocene, Ecuador): insights from integrated sedimentologic, taphonomic and paleoecologic analysis of molluscan shell concentrations. Palaeogeography, Palaeoclimatology, Palaeoecology 216:1-25 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 48665: authorized by Austin Hendy, entered by Austin Hendy on 26.03.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for Mollusca
Bivalvia
 Nuculanida - Nuculanidae
"Nuculana eburnea" = Saccella eburnea, Adrana sp.
"Nuculana eburnea" = Saccella eburnea Sowerby 1833 pointed nut clam
Adrana sp. Adams and Adams 1858 pointed nut clam
 Nuculida - Nuculidae
"Nucula exigua" = Nucula (Lamellinucula) exigua Sowerby 1833 nut clam
 Pectinida - Pectinoidae
"Pacipecten sp." = Leptopecten
"Pacipecten sp." = Leptopecten Verrill 1897 scallop
 Arcida - Arcidae
Arcidae indet. Lamarck 1809 clam
Anadara aequatorialis d'Orbigny 1846 ark
Lunarca brevifrons Sowerby I 1833 ark
"Grandiarca grandis" = Larkinia grandis Broderip and Sowerby 1829 ark
Anadara obesa Sowerby 1833 ark
Anadara nux Sowerby I 1833 ark
 Arcida - Noetiidae
Noetia reversa Sowerby 1833 clam
 Solenida - Solenidae
Solen sp. Linnaeus 1758 clam
 Hiatellida - Hiatellidae
"Panopea cf. coquimbensis" = Panopea abbreviata
"Panopea cf. coquimbensis" = Panopea abbreviata Valenciennes 1839 clam
 Cardiida - Cardiidae
"Trachycardium procerum" = Mexicardia procera, "Trigoniocardia obovalis" = Apiocardia obovale
"Trachycardium procerum" = Mexicardia procera Sowerby 1833 cockle
"Trigoniocardia obovalis" = Apiocardia obovale Sowerby 1833 cockle
 Cardiida - Solecurtidae
Solecurtus broggii Pilsbry and Olsson 1941 clam
Tagelus sp. Gray 1847 clam
 Cardiida - Tellinidae
Tellina sp., "Tellina aequizonata" = Tellina (Miratellina) aequizonata, "Tellina cf. hertleini" = Tellina (Eurytellina) hertleini, "Macoma lamproleuca" = Psammacoma lamproleuca, Psammotreta sp., "Macoma cf. grandis" = Psammotreta grandis, Temnoconcha cognata
Tellina sp. Linnaeus 1758 tellin clam
"Tellina aequizonata" = Tellina (Miratellina) aequizonata Pilsbry and Olsson 1941 tellin clam
"Tellina cf. hertleini" = Tellina (Eurytellina) hertleini Olssoni 1961 tellin clam
"Macoma lamproleuca" = Psammacoma lamproleuca Pilsbry and Lowe 1932 tellin clam
Psammotreta sp. Dall 1900 tellin clam
"Macoma cf. grandis" = Psammotreta grandis Hanley 1844 tellin clam
Temnoconcha cognata Adams 1852 tellin clam
 Cardiida - Anatinellidae
Raeta undulata Gould 1851 clam
 Cardiida - Mactridae
"Mactra (Micromactra) sp." = Mactrotoma, Mulinia pallida
"Mactra (Micromactra) sp." = Mactrotoma Dall 1894 surfclam
Mulinia pallida Broderip and Sowerby 1829 clam
 Cardiida - Veneridae
"Chione jamaniana" = Chionopsis amathusia, Chione sp., "Chione gorgona" = Lirophora mariae, Cyclinella sp., Pitar sp., "Pitar paytensis" = Lamelliconcha paytensis
"Chione jamaniana" = Chionopsis amathusia Philippi 1844 venus clam
Chione sp. von Mühlfield 1811 venus clam
"Chione gorgona" = Lirophora mariae d'Orbigny 1846 venus clam
Cyclinella sp. Dall 1902 venus clam
Pitar sp. Römer 1857 venus clam
"Pitar paytensis" = Lamelliconcha paytensis d'Orbigny 1845 venus clam
 Cardiida - Lasaeidae
"Mysella compressa" = Kurtiella compressa
"Mysella compressa" = Kurtiella compressa Dall 1913 clam
 Cardiida - Galeommatidae
"Bornia cf. venada" = Solecardia venada
"Bornia cf. venada" = Solecardia venada Olsson 1961 clam
 Pholadida - Pholadidae
"Pholas chiloensis" = Pholas (Thovana) chiloensis
"Pholas chiloensis" = Pholas (Thovana) chiloensis Molina 1782 clam
 Pholadida - Corbulidae
Corbula sp., "Corbula tenuis" = Tenuicorbula tenuis
Corbula sp. Bruguière 1789 clam
"Corbula tenuis" = Tenuicorbula tenuis Sowerby 1833 clam
Scaphopoda
 Gadilida - Gadilidae
Cadulus sp. Philippi 1844 tusk shell
 Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758 tusk shell
Gastropoda
 Opisthobranchia - Cylichnidae
Acteocina puruha Pilsbry and Olsson 1941 barrel-bubble
 Heterostropha - Architectonicidae
Architectonica nobilis Röding 1798 sundial
 Neotaenioglossa - Calyptraeidae
Crepidula sp. Lamarck 1799 slipper shell
 Sorbeoconcha - Vitrinellidae
Circulus sp. Jeffreys 1842 snail
Circulus occidentalis Pilsbry and Olsson 1941 snail
 Neogastropoda - Cancellariidae
Cancellaria metuloides Olsson 1964 snail
"Cancellaria solida" = Pyruclia solida Sowerby 1832 snail
 Neogastropoda - Olividae
Oliva incrassata Lightfoot 1786 olive snail
 Neogastropoda - Conidae
Conus sp. Linnaeus 1758 cone shell
Conus cf. cacuminatus Spieker 1922 cone shell
 Neogastropoda - Terebridae
Strioterebrum sp. Sacco 1891 auger snail
Terebra elenae auger snail
 Neogastropoda - Melongenidae
Melongena sp. Schumacher 1817 snail
 Neogastropoda - Nassariidae
 Neogastropoda - Buccinidae
Hanetia cf. boggsi Pilsbry and Olsson 1941 true whelk
Hanetia cf. ecuadorensis Pilsbry and Olsson 1941 true whelk
Hanetia cymioides Pilsbry and Olsson 1941 true whelk
[entered as Hanetia cymiodes]
Strombinophos loripanus Pilsbry and Olsson 1941 true whelk
Northia northiae Gray in Griffith & Pidgeon 1833 true whelk
Cymatophos galerus Pilsbry and Olsson 1941 true whelk
 Sorbeoconcha - Bursidae
Marsupina nana Broderip and Sowerby 1829 frog shell
 Sorbeoconcha - Cassidae
Semicassis centiquadratus snail
[entered as Semicassis centiquadrata]
 Sorbeoconcha - Naticidae
Natica elenae Récluz 1844 moon snail
 Epitonioidea - Epitoniidae
Epitonium sp., "Nitidiscala cf. durhamiana" = Epitonium (Nitidiscala)
Epitonium sp. Bolten 1798 wentletrap
"Nitidiscala cf. durhamiana" = Epitonium (Nitidiscala) wentletrap
 Vanikoroidea - Eulimidae
Eulima sp. Risso 1826 snail
Niso sp. Risso 1826 snail
 Cerithioidea - Turritellidae
Turritella pasada Pilsbry and Olsson 1941 turret shell