Lake Carmel Pit (Barrier Bar) - Miller III (1983) (Holocene of the United States)

Also known as Barrier Bar, Lake Carmel Pit

Where: Orleans County, Louisiana (30.1° N, 90.0° W: paleocoordinates 30.1° N, 90.0° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: New Orleans Barrier Trend Formation, Holocene (0.0 - 0.0 Ma)

• Five late Quaternary stratigraphic units are exposed at the Lake Carmel borrow pit. These in ascending order are : 1) deltaic equivalents of Deweyville terrace alluvium (Wisconsin); 2) a buried soil zone, "Little Woods paleosol" (late Wisconsin-early (Pleistocene); 3) bay-sound clay, "Michoud Formation" (middle Holocene); 4) barrier bar sand of the New Orleans trend (middle Holocene); 5) St Bernard prodeltaic and delta front deposits (late Holocene). This collection is from the basal Barrier Bar unit (New Orleans trend). The Michoud Formation grades upward into a thin discontinous clayey sand containing abundant mollusk shells. This clayey sand unit forms the bottom of a locally, shelly, fine to coarse sand unit containing numerous burrow systems. Radiocarbon dates on peat collected from this unit yield dates of 11,090 and 29,860 years, although most authors consider the unit to have accumulated between 4-5,000 years ago. The unit is 1.5m thick. The collection comes from depth 4.5-6.0 m

• bed-level stratigraphic resolution

Environment/lithology: coastal; unlithified, fine-grained, coarse, shelly/skeletal sandstone

• Part of a sub-surface sand body that has been variously labeled "New Orleans barrier island".
• Locally, shelly, fine to coarse sand

•JA: I am scoring this as unlithified because the sand is Holocene, isn't calcareous, overlies a soil, and includes a peat, plus the entire section is non-carbonate

Size class: macrofossils

Collection methods: bulk,

• All taxa collected and identified G. Mollyn. Unknown repository, though possibly Tulane University

Primary reference: W. Miller, III. 1983. Stratigraphy of newly exposed Quaternary seduments, eastern Orleans Parish, Louisiana. Tulane Studies in Geology and Paleontology 17(4):85-104 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 41935: authorized by Austin Hendy, entered by Austin Hendy on 22.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for mollusca. Key to abundance data: a=abundant; c=common; mc=moderately common; u=uncommon; r=rare.
 Arcida - Arcidae
"Anadara brasiliana" = Anadara (Cunearca) brasiliana, "Anadara ovalis" = Lunarca ovalis, "Anadara transversa" = Anadara (Larkinia) transversa
"Anadara brasiliana" = Anadara (Cunearca) brasiliana Lamarck 1819 ark
"Anadara ovalis" = Lunarca ovalis Bruguiere 1789 ark
"Anadara transversa" = Anadara (Larkinia) transversa Say 1822 ark
 Arcida - Noetiidae
"Noetia ponderosa" = Eontia ponderosa
"Noetia ponderosa" = Eontia ponderosa Say 1822 clam
 Pectinida - Pectinoidae
Argopecten gibbus Linnaeus 1758 calico scallop
Argopecten irradians Lamarck 1819 calico scallop
Subspecies: Argopecten irradians concentricus
 Pectinida - Plicatulidae
Plicatula gibbosa Lamarck 1801 scallop
 Pectinida - Anomiidae
Anomia simplex d'Orbigny 1845 jingle
 Ostreida - Ostreidae
Crassostrea virginica Gmelin 1791 oyster
 Ostreida - Pinnidae
Atrina serrata Sowerby 1825 oyster
 Mytilida - Mytilidae
Geukensia demissa Dilwyn 1817 mussel
Subspecies: Geukensia demissa ponderosa
Brachidontes exustus Linnaeus 1758 mussel
 Carditida - Crassatellidae
Crassinella lunulata Conrad 1834 clam
 Pholadida - Corbulidae
"Corbula contracta" = Caryocorbula contracta, "Corbula swiftiana" = Caryocorbula caribaea
"Corbula contracta" = Caryocorbula contracta Say 1822 clam
"Corbula swiftiana" = Caryocorbula caribaea d'Orbigny 1845 clam
 Pholadida - Myidae
Paramya subovata Conrad 1845 softshell clam
 Pholadida - Pholadidae
Cyrtopleura costata Linnaeus 1758 clam
 Cardiida -
"Donax variabilis" = Serrula variabilis
"Donax variabilis" = Serrula variabilis Say 1822 clam
Subspecies: Donax variabilis roermeri
 Cardiida - Dreissenidae
Mytilopsis leucophaeata Conrad 1831 clam
 Cardiida - Chamidae
Chama congregata Conrad 1833 jewel box
Arcinella cornuta Conrad 1866 jewel box
 Cardiida - Anatinellidae
Raeta plicatella Lamarck 1818 clam
 Cardiida - Mactridae
Mulinia lateralis Say 1822 clam
[entered as Mulinia laternalis]
Rangia flexuosa Conrad 1839 clam
Rangia cuneata Sowerby 1831 clam
"Spisula solidissima" = Hemimactra solidissima Dilwyn 1817 clam
Subspecies: Spisula solidissima similis
"Mactra fragilis" = Mactrotoma fragilis Gmelin 1792 surfclam
 Cardiida - Ungulinidae
"Diplodonta semiaspera" = Diplodonta (Phlyctiderma) semiaspera
"Diplodonta semiaspera" = Diplodonta (Phlyctiderma) semiaspera Philippi 1836 clam
 Cardiida - Veneridae
Gemma gemma Totten 1834 venus clam
Chione cancellata Linnaeus 1767 venus clam
Mercenaria campechiensis Gmelin 1791 quahog
"Chione intapurpurea" = Puberella intapurpurea Conrad 1849 venus clam
"Anomalocardia auberiana" = Anomalocardia cuneimeris Conrad 1846 venus clam
Timoclea grus Holmes 1858 venus clam
Dosinia discus Reeve 1850 venus clam
"Macrocallista nimbosa" = Macrocallista (Macrocallista) nimbosa Solander 1786 venus clam
"Petricola pholadiformis" = Petricolaria pholadiformis Lamarck 1818 venus clam
 Cardiida - Solecurtidae
Tagelus plebeius Lightfoot 1786 clam
 Cardiida - Donacidae
Donax texasianus Philippi 1847 clam
 Cardiida - Tellinidae
Strigilla mirabilis, "Tellina texana" = Angulus texanus, Tellidora cristata, "Tellina iris" = Scissula iris, Macoma constricta, "Tellina aequistriata" = Tellina (Merisca) aequistriata, "Tellina alternata" = Tellina (Eurytellina) alternata
Strigilla mirabilis Philippi 1841 tellin clam
"Tellina texana" = Angulus texanus Dall 1900 tellin clam
Tellidora cristata Récluz 1842 tellin clam
"Tellina iris" = Scissula iris Say 1822 tellin clam
Macoma constricta Bruguière 1792 tellin clam
"Tellina aequistriata" = Tellina (Merisca) aequistriata Say 1824 tellin clam
"Tellina alternata" = Tellina (Eurytellina) alternata Say 1822 tellin clam
 Cardiida - Semelidae
Abra aequalis Say 1822 abra
Semele bellastriata Conrad 1837 clam
Semele proficua Pulteney 1799 clam
Ervilia cf. concentrica Holmes 1858 clam
 Cardiida - Cardiidae
Trachycardium muricatum Linnaeus 1758 cockle
"Laevicardium laevigatum" = Laevicardium serratum Linnaeus 1758 cockle
Dinocardium robustum Lightfoot 1786 cockle
 Cardiida - Leptonidae
Lepton lepidum Say 1826 clam
 Cardiida - Lasaeidae
Aligena texasiana Harry 1969 aligena
 Solenida - Pharidae
Ensis minor Dall 1899 clam
 Pandorida - Pandoridae
"Pandora trilineata" = Pandora (Pandora) trilineata
"Pandora trilineata" = Pandora (Pandora) trilineata Say 1822 clam
 Thraciida - Periplomatidae
Periploma margaritaceum Lamarck 1801 clam
 Lucinida - Lucinidae
"Parvilucina multilineata" = Parvilucina multistriata Conrad 1841 clam
Anodontia alba Link 1807 clam
[entered as Anodonta alba]
 Protobranchia - Nuculanidae
Nuculana concentrica Say 1824 Concentric Nut Clam
Nuculana acuta Conrad 1832 pointed nut clam
 Ptenoglossa - Epitoniidae
Epitonium cf. multistriatum Say 1826 wentletrap
Epitonium rupicola Kurtz 1860 wentletrap
Epitonium cf. tollini Bartsch 1938 wentletrap
Epitonium angulatum Say 1831 wentletrap
 Thecosomata - Cavoliniidae
Creseis acicula Rang 1828 snail
 Opisthobranchia - Retusidae
Volvulella persimilis Mörch 1875 snail
 Opisthobranchia - Cylichnidae
Acteocina canaliculata Say 1826 barrel-bubble
 Triphoroidea - Triphoridae
Triphora perversa Linnaeus 1758 snail
Subspecies: Triphora perversa nigrocincta
 Triphoroidea - Cerithiopsidae
"Seila adamsi" = Seila adamsii
"Seila adamsi" = Seila adamsii Lea 1845 snail
 Neogastropoda - Olividae
"Oliva sayana" = Oliva (Ispidula) sayana, "Oliva mutica" = Olivella mutica
"Oliva sayana" = Oliva (Ispidula) sayana Ravenel 1834 olive snail
"Oliva mutica" = Olivella mutica Say 1822 olive snail
 Neogastropoda - Borsoniidae
Nannodiella oxia Bush 1885 snail
Kurtziella atrostyla Tryon 1884 cone shell
"Terebra dislocata" = Strioterebrum dislocatum Say 1822 auger snail
"Terebra concava" = Strioterebrum concava Say 1827 auger snail
Hastula salleana Deshayes 1859 auger snail
 Neogastropoda - Turridae
Cancellaria reticulata Emmon 1858 turrid
 Neogastropoda - Marginellidae
"Marginella apicina" = Prunum apicinum
"Marginella apicina" = Prunum apicinum Menke 1828 margin shell
 Neogastropoda - Volutidae
Scaphella junonia Lamark 1804 volute
 Neogastropoda - Muricidae
"Thais haemastoma" = Stramonita haemostoma, "Thais haemastoma" = Stramonita haemostoma
"Thais haemastoma" = Stramonita haemostoma Linnaeus 1767 murex snail
Subspecies: Thais haemastoma floridiana
"Thais haemastoma" = Stramonita haemostoma Linnaeus 1767 murex snail
Subspecies: Thais haemastoma canaliculata
 Neogastropoda - Buccinidae
"Cantharus cancellarius" = Solenosteira cancellaria, "Anachis obesa" = Parvanachis obesa, "Mitrella lunata" = Astyris lunata, "Anachis semiplicata" = Costoanachis semiplicata, "Fasciolaria lilium" = Cinctura lilium, Melongena corona, Busycon perversum, "Busycon spiratum" = Busycotypus spiratus, "Nassarius vibex" = Nassarius (Nassarius) vibex, "Nassarius acutus" = Nassarius (Nassarius) acutus
"Cantharus cancellarius" = Solenosteira cancellaria Conrad 1846 true whelk
"Anachis obesa" = Parvanachis obesa Adams 1845 true whelk
"Mitrella lunata" = Astyris lunata Say 1826 true whelk
"Anachis semiplicata" = Costoanachis semiplicata Stearns 1873 true whelk
"Fasciolaria lilium" = Cinctura lilium Fischer 1807 true whelk
Subspecies: Fasciolaria lilium hunteria
Melongena corona Gmelin 1791 true whelk
Busycon perversum Linnaeus 1758 whelk
Subspecies: Busycon perversum pulleyi
"Busycon spiratum" = Busycotypus spiratus Lamarck 1816 whelk
Subspecies: Busycon spiratum plagosum
"Nassarius vibex" = Nassarius (Nassarius) vibex Say 1822 true whelk
"Nassarius acutus" = Nassarius (Nassarius) acutus Say 1822 true whelk
 Stromboidea - Strombidae
Strombus alatus Gmelin 1792 conch
 Ficoidea - Ficidae
Ficus communis Röding 1798 fig shell
 Littorinoidea - Littorinidae
"Littorina irrorata" = Littoraria irrorata
"Littorina irrorata" = Littoraria irrorata Say 1822 periwinkle
 Vanikoroidea - Eulimidae
Eulima sp. Risso 1826 snail
"Balcis cf. arcuata" = Vitreolina arcuata Adams 1850 snail
 Calyptraeoidea - Calyptraeidae
Crepidula plana Say 1822 slipper shell
Crepidula fornicata Linnaeus 1758 slipper shell
 Rissooidea - Vitrinellidae
 Truncatelloidea - Caecidae
Caecum johnsoni Winkley 1908 snail
Caecum imbricatum Carpenter 1858 snail
 Truncatelloidea - Tornidae
Teinostoma biscaynense McGinty 1945 snail
 Naticoidea - Naticidae
Tectonatica pusilla Say 1822 moon snail
Sinum perspectivum Say 1831 moon snail
"Neverita duplicata" = Neverita duplicatus Say 1822 moon snail
 Tonnoidea - Bursidae
"Phalium granulatum" = Semicassis granulata Born 1778 frog shell
Distorsio clathrata Lamarck 1816 frog shell
Tonna galea Linnaeus 1758 tun shell
  - Bursidae
Litiopa melanostoma Rang 1829 tun shell
  - Cassidae
"Diastoma varium" = Bittiolum varium
"Diastoma varium" = Bittiolum varium Pfeiffer 1840 cerith snail
 Heterostropha - Acteonidae
"Acteon punctostriatus" = Japonactaeon punctostriata
"Acteon punctostriatus" = Japonactaeon punctostriata Adams 1840 snail
 Pulmonata - Ellobiidae
Melampus bidentatus Say 1822 pulmonate
 Neritoidea - Neritidae
Neritina virginea, "Neritina reclivata" = Neritina usnea
Neritina virginea Linnaeus 1758 snail
"Neritina reclivata" = Neritina usnea Röding 1798 snail
 Pyramidelloidea - Pyramidellidae
"Odostomia seminuda" = Boonea seminuda, "Odostomia impressa" = Boonea impressa, "Pyramidella crenulata" = Pyramidella suturalis, Peristichia agria, Turbonilla interrupta, Eulimastoma cf. weberi, "Eulimastoma cf. teres" = Eulimastoma engonium, Odostomia cf. livida
"Odostomia seminuda" = Boonea seminuda Adams 1839 snail
"Odostomia impressa" = Boonea impressa Say 1822 snail
"Pyramidella crenulata" = Pyramidella suturalis Lea 1843 snail
Turbonilla interrupta Totten 1835 snail
Eulimastoma cf. weberi Morrison 1965 snail
"Eulimastoma cf. teres" = Eulimastoma engonium Bush 1885 snail
 Turbinoidea - Turbinidae
"Solariorbis infracarinata" = Solariorbis infracarinatus
"Solariorbis infracarinata" = Solariorbis infracarinatus Gabb 1881 snail
 Fissurelloidea - Fissurellidae
Diodora cayenensis Lamarck 1822 snail
 Dentaliida - Dentaliidae
"Dentalium texasianum" = Paradentalium americanum, Dentalium sp.
"Dentalium texasianum" = Paradentalium americanum Chenu 1843 tusk shell
Dentalium sp. Linnaeus 1758 tusk shell
Odostomia gibbosa
"Odostomia cf. gibbosa" = Fargoa gibbosa
"Odostomia cf. gibbosa" = Fargoa gibbosa Bush 1909