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
•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
unclassified | |
Gastropoda | |
"Solariorbis infracarinata" = Solariorbis infracarinatus
"Solariorbis infracarinata" = Solariorbis infracarinatus Gabb 1881 snail | |
Diodora cayenensis Lamarck 1822 snail | |
Volvulella persimilis Mörch 1875 snail | |
Acteocina canaliculata Say 1826 barrel-bubble | |
Creseis acicula Renz 1829 snail | |
"Neritina reclivata" = Neritina usnea, Neritina virginea
"Neritina reclivata" = Neritina usnea Röding 1798 snail
Neritina virginea Linnaeus 1758 snail | |
Peristichia agria, "Eulimastoma cf. teres" = Eulimastoma engonium, Eulimastoma cf. weberi, "Pyramidella crenulata" = Pyramidella suturalis, "Odostomia seminuda" = Boonea seminuda, "Odostomia impressa" = Boonea impressa, Odostomia cf. livida, Turbonilla interrupta
Peristichia agria snail
"Eulimastoma cf. teres" = Eulimastoma engonium Bush 1885 snail
Eulimastoma cf. weberi Morrison 1965 snail
"Pyramidella crenulata" = Pyramidella suturalis Lea 1843 snail
"Odostomia seminuda" = Boonea seminuda Adams 1839 snail
"Odostomia impressa" = Boonea impressa Say 1822 snail
Odostomia cf. livida snail
Turbonilla interrupta Totten 1835 snail | |
Melampus bidentatus Say 1822 snail | |
"Acteon punctostriatus" = Japonactaeon punctostriata
"Acteon punctostriatus" = Japonactaeon punctostriata Adams 1840 snail | |
Epitonium cf. multistriatum Say 1826 wentletrap
Epitonium cf. tollini Bartsch 1938 wentletrap
Epitonium rupicola Kurtz 1860 wentletrap
Epitonium angulatum Say 1831 wentletrap | |
Crepidula plana Say 1822 slipper shell
Crepidula fornicata Linnaeus 1758 slipper shell | |
"Seila adamsi" = Seila adamsii
"Seila adamsi" = Seila adamsii Lea 1845 snail | |
| |
"Littorina irrorata" = Littoraria irrorata
"Littorina irrorata" = Littoraria irrorata Say 1822 periwinkle | |
Sinum perspectivum Say 1831 moon snail
"Neverita duplicata" = Neverita duplicatus Say 1822 moon snail
Tectonatica pusilla Say 1822 moon snail | |
Cancellaria reticulata Emmon 1858 snail | |
Kurtziella atrostyla Tryon 1884 snail | |
Nannodiella oxia Bush 1885 snail | |
Hastula salleana, "Terebra concava" = Strioterebrum concava, "Terebra dislocata" = Strioterebrum dislocatum
Hastula salleana Deshayes 1859 auger snail
"Terebra concava" = Strioterebrum concava Say 1827 auger snail
"Terebra dislocata" = Strioterebrum dislocatum Say 1822 auger snail | |
"Nassarius acutus" = Nassarius (Nassarius) acutus, Nassarius vibex
"Nassarius acutus" = Nassarius (Nassarius) acutus Say 1822 snail
Nassarius vibex Say 1822 snail | |
Melongena corona Gmelin 1791 snail | |
"Cantharus cancellarius" = Solenosteira cancellaria
"Cantharus cancellarius" = Solenosteira cancellaria Conrad 1846 true whelk | |
"Fasciolaria lilium" = Cinctura lilium
| |
"Anachis obesa" = Parvanachis obesa, "Mitrella lunata" = Astyris lunata, "Anachis semiplicata" = Costoanachis semiplicata
"Anachis obesa" = Parvanachis obesa Adams 1845 snail
"Mitrella lunata" = Astyris lunata Say 1826 snail
"Anachis semiplicata" = Costoanachis semiplicata Stearns 1873 snail | |
"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 | |
Scaphella junonia Lamark 1804 volute | |
"Marginella apicina" = Prunum apicinum
"Marginella apicina" = Prunum apicinum Menke 1828 margin shell | |
"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
| |
Strombus alatus Gmelin 1792 conch | |
"Phalium granulatum" = Semicassis granulata
"Phalium granulatum" = Semicassis granulata Born 1778 snail | |
Distorsio clathrata Lamarck 1816 snail | |
Tonna galea Linnaeus 1758 tun shell | |
Ficus communis Röding 1798 fig shell | |
Teinostoma biscaynense McGinty 1945 snail | |
Caecum imbricatum Carpenter 1858 snail
Caecum johnsoni Winkley 1908 snail | |
Cyclostremiscus pentagonus Gabb 1873 snail
Cyclostremiscus suppressus Dall 1889 snail | |
Eulima sp. Risso 1826 snail
Balcis cf. gracilis snail
"Balcis cf. arcuata" = Vitreolina arcuata Adams 1850 snail | |
Litiopa melanostoma Rang 1829 snail | |
"Diastoma varium" = Bittiolum varium
"Diastoma varium" = Bittiolum varium Pfeiffer 1840 cerith snail | |
Scaphopoda | |
Dentalium sp., "Dentalium texasianum" = Paradentalium americanum
Dentalium sp. Linnaeus 1758 tusk shell
"Dentalium texasianum" = Paradentalium americanum Chenu 1843 tusk shell | |
Bivalvia | |
Nuculana acuta Conrad 1832 pointed nut clam
Nuculana concentrica Say 1824 Concentric Nut Clam | |
"Noetia ponderosa" = Eontia ponderosa
"Noetia ponderosa" = Eontia ponderosa Say 1822 clam | |
"Anadara ovalis" = Lunarca ovalis, "Anadara transversa" = Anadara (Larkinia) transversa, "Anadara brasiliana" = Anadara (Cunearca) brasiliana
"Anadara ovalis" = Lunarca ovalis Bruguiere 1789 ark
"Anadara transversa" = Anadara (Larkinia) transversa Say 1822 ark
"Anadara brasiliana" = Anadara (Cunearca) brasiliana Lamarck 1819 ark | |
Plicatula gibbosa Lamarck 1801 scallop | |
Anomia simplex d'Orbigny 1845 jingle | |
Argopecten gibbus Linnaeus 1758 calico scallop | |
Crassostrea virginica Gmelin 1791 oyster | |
Atrina serrata Sowerby 1825 oyster | |
Brachidontes exustus Linnaeus 1758 mussel | |
"Parvilucina multilineata" = Parvilucina multistriata Conrad 1841 clam | |
Cyrtopleura costata Linnaeus 1758 clam | |
Paramya subovata Conrad 1845 softshell clam | |
"Corbula swiftiana" = Caryocorbula caribaea, "Corbula contracta" = Caryocorbula contracta
"Corbula swiftiana" = Caryocorbula caribaea d'Orbigny 1845 clam
"Corbula contracta" = Caryocorbula contracta Say 1822 clam | |
Aligena texasiana Harry 1969 aligena | |
Lepton lepidum Say 1826 clam | |
Mulinia lateralis, Rangia flexuosa, Rangia cuneata, "Spisula solidissima" = Hemimactra solidissima, "Mactra fragilis" = Mactrotoma fragilis
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 | |
Raeta plicatella Lamarck 1818 clam | |
Chione cancellata, Dosinia discus, Mercenaria campechiensis, Timoclea grus, "Anomalocardia auberiana" = Anomalocardia cuneimeris, "Chione intapurpurea" = Puberella intapurpurea, "Macrocallista nimbosa" = Macrocallista (Macrocallista) nimbosa, "Petricola pholadiformis" = Petricolaria pholadiformis, Gemma gemma
Chione cancellata Linnaeus 1767 venus clam
Dosinia discus Reeve 1850 venus clam
Mercenaria campechiensis Gmelin 1791 quahog
Timoclea grus Holmes 1858 venus clam
"Anomalocardia auberiana" = Anomalocardia cuneimeris Conrad 1846 venus clam
"Chione intapurpurea" = Puberella intapurpurea Conrad 1849 venus clam
"Macrocallista nimbosa" = Macrocallista (Macrocallista) nimbosa Solander 1786 venus clam
"Petricola pholadiformis" = Petricolaria pholadiformis Lamarck 1818 venus clam
Gemma gemma Totten 1834 venus clam | |
Arcinella cornuta Conrad 1866 jewel box
Chama congregata Conrad 1833 jewel box | |
"Diplodonta semiaspera" = Diplodonta (Phlyctiderma) semiaspera
"Diplodonta semiaspera" = Diplodonta (Phlyctiderma) semiaspera Philippi 1836 clam | |
Mytilopsis leucophaeata Conrad 1831 clam | |
Dinocardium robustum, "Trachycardium muricatum" = Trachycardium (Dallocardia) muricatum, "Laevicardium laevigatum" = Laevicardium serratum
Dinocardium robustum Lightfoot 1786 cockle
"Trachycardium muricatum" = Trachycardium (Dallocardia) muricatum Linnaeus 1758 cockle
"Laevicardium laevigatum" = Laevicardium serratum Linnaeus 1758 cockle | |
Donax texasianus, "Donax variabilis" = Serrula variabilis
Donax texasianus Philippi 1847 clam | |
Macoma constricta, Tellidora cristata, Strigilla mirabilis, "Tellina texana" = Angulus texanus, "Tellina iris" = Scissula iris, "Tellina alternata" = Tellina (Eurytellina) alternata, "Tellina aequistriata" = Tellina (Merisca) aequistriata
Macoma constricta Bruguière 1792 tellin clam
Tellidora cristata Récluz 1842 tellin clam
Strigilla mirabilis Philippi 1841 tellin clam
"Tellina texana" = Angulus texanus Dall 1900 tellin clam
"Tellina iris" = Scissula iris Say 1822 tellin clam
"Tellina alternata" = Tellina (Eurytellina) alternata Say 1822 tellin clam
"Tellina aequistriata" = Tellina (Merisca) aequistriata Say 1824 tellin clam | |
Ervilia cf. concentrica Holmes 1858 clam
Abra aequalis Say 1822 abra
Semele proficua Pulteney 1799 clam
Semele bellastriata Conrad 1837 clam | |
Tagelus plebeius Lightfoot 1786 clam | |
"Pandora trilineata" = Pandora (Pandora) trilineata
"Pandora trilineata" = Pandora (Pandora) trilineata Say 1822 clam | |
Periploma margaritaceum Lamarck 1801 clam | |
Ensis minor Dall 1899 clam | |
Crassinella lunulata Conrad 1834 clam | |
Odostomia gibbosa | |
"Odostomia cf. gibbosa" = Fargoa gibbosa
"Odostomia cf. gibbosa" = Fargoa gibbosa Bush 1909 |