Where: St Mary's County, Maryland (38.2° N, 76.4° W: paleocoordinates 38.3° N, 74.7° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: St Marys Formation, Late/Upper Miocene (11.6 - 5.3 Ma)
• LITHOSTRATIGRAPHY: From the St Marys Fm, for which lithostratigraphic relations are not discussed. AGE: Late Miocene; not discussed in text; "Shattuck Zone 24". STRATIGRAPHIC POSITION: From unknown position within formation.
• bed-level stratigraphic resolution
Environment/lithology: coastal; unlithified, silty sandstone
Size class: macrofossils
Preservation: original aragonite
Collected by Petuch in 1980-1982; reposited in the USNM
• COLLECTOR: E. J. Petucj, 1980-1982. REPOSITORY: ANSP and USNM.
Primary reference: E. J. Petuch. 1988. Neogene History of Tropical American Mollusks 1-217 [A. Hendy/A. Hendy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 92325: authorized by Austin Hendy, entered by Austin Hendy on 08.11.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Epitonium sayanum wentletrap
Epitonium chancellorensis n. sp. Petuch 1988 wentletrap | |
Mariacolpus plebeia n. gen.
Mariacolpus plebeia n. gen. Say 1824 turret shell | |
Euspira tuomeyi, Poliniciella marylandica n. gen. n. sp., Neverita (Glossaulax) asheri n. sp., Neverita (Glossaulax) discula n. sp.
Euspira tuomeyi moon snail
Poliniciella marylandica n. gen. n. sp. Petuch 1988 moon snail
Neverita (Glossaulax) asheri n. sp. Petuch 1988 moon snail
Neverita (Glossaulax) discula n. sp. Petuch 1988 moon snail | |
Mariasveltia lunata n. gen., Marianarona marylandica n. gen. n. sp., Marianarona asheri n. gen. n. sp.
Mariasveltia lunata n. gen. Conrad 1830 snail
Marianarona marylandica n. gen. n. sp. Petuch 1988 snail
Marianarona asheri n. gen. n. sp. Petuch 1988 snail | |
Conus (Leptoconus) sanctaemariae n. sp. Petuch 1988 cone shell
Propebela parva Conrad 1830 cone shell
Propebela marylandica n. sp. Petuch 1988 cone shell | |
Chesasyrinx rotifera n. gen.
Chesasyrinx rotifera n. gen. Conrad 1830 snail | |
Mariadrillia parvoidea n. gen.
Mariadrillia parvoidea n. gen. Martin 1904 snail | |
Chesaclava dissimilis n. gen., Chesaclava quarlesi n. gen. n. sp., Sediliopsis gracilis n. gen., Cymatosyrinx mariana n. sp.
Chesaclava dissimilis n. gen. Conrad 1830 snail
Chesaclava quarlesi n. gen. n. sp. Petuch 1988 snail
Sediliopsis gracilis n. gen. Conrad 1830 snail
Cymatosyrinx mariana n. sp. Petuch 1988 snail | |
Laevihastula marylandica n. gen. n. sp.
Laevihastula marylandica n. gen. n. sp. Petuch 1988 auger snail | |
Nodisurculina engonata n. gen., Mariaturricula biscatenaria n. gen.
Nodisurculina engonata n. gen. Conrad 1862 ribbed mitre
Mariaturricula biscatenaria n. gen. Conrad 1834 ribbed mitre | |
Boreotrophon harasewychi n. sp., Chesatrophon chesapeakeanus n. gen. n. sp., Mariasalpinx emilyae n. gen. n. sp.
Boreotrophon harasewychi n. sp. Petuch 1988 murex snail
Chesatrophon chesapeakeanus n. gen. n. sp. Martin 1904 murex snail
Mariasalpinx emilyae n. gen. n. sp. Petuch 1988 murex snail | |
Volutifusus acus n. sp., Volutifusus mutabilis, Volutifusus asheri n. sp., Volutifusus marylandicus n. sp., Volutifusus meganucleus n. sp., "Scaphellopsis solitaria n. gen." = Scaphella solitaria
Volutifusus acus n. sp. Petuch 1988 volute
Volutifusus mutabilis Conrad 1834 volute
Volutifusus asheri n. sp. Petuch 1988 volute
Volutifusus marylandicus n. sp. Petuch 1988 volute
Volutifusus meganucleus n. sp. Petuch 1988 volute
"Scaphellopsis solitaria n. gen." = Scaphella solitaria Conrad 1830 volute | |
Turrifulgur turriculus n. gen. n. sp., "Turrifulgur fusiforme n. gen." = Busycon fusiformis, Busycotypus coronatum, Busycotypus rugosum, Busycotypus asheri n. sp., Busycotypus alveatum
Turrifulgur turriculus n. gen. n. sp. whelk
"Turrifulgur fusiforme n. gen." = Busycon fusiformis Conrad 1840 whelk
Busycotypus coronatum Conrad 1840 whelk
Busycotypus rugosum Conrad 1843 whelk
Busycotypus asheri n. sp. Petuch 1988 whelk
Busycotypus alveatum Conrad 1863 whelk | |
Mariafusus marylandica n. gen., Pseudoaptyxis sanctaemariae n. sp.
Mariafusus marylandica n. gen. Martin 1904 snail
Pseudoaptyxis sanctaemariae n. sp. Petuch 1988 snail | |
Ptychosalpinx pustulosus n. sp. Petuch 1988 true whelk
Ptychosalpinx altilis Conrad 1832 true whelk | |
"Mariacassis caelatum n. gen." = Echinophoria caelatura
"Mariacassis caelatum n. gen." = Echinophoria caelatura Conrad 1830 snail | |
Fissurella fluviamariana n. sp.
Fissurella fluviamariana n. sp. Petuch 1988 snail |