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 | |
Fissurella fluviamariana n. sp.
Fissurella fluviamariana n. sp. Petuch 1988 snail | |
Mariacolpus plebeia n. gen.
Mariacolpus plebeia n. gen. Say 1824 turret shell | |
Epitonium sayanum wentletrap
Epitonium chancellorensis n. sp. Petuch 1988 wentletrap | |
Neverita (Glossaulax) asheri n. sp., Neverita (Glossaulax) discula n. sp., Poliniciella marylandica n. gen. n. sp., Euspira tuomeyi
Neverita (Glossaulax) asheri n. sp. Petuch 1988 moon snail
Neverita (Glossaulax) discula n. sp. Petuch 1988 moon snail
Poliniciella marylandica n. gen. n. sp. Petuch 1988 moon snail
Euspira tuomeyi moon snail | |
Chesatrophon chesapeakeanus n. gen. n. sp., Boreotrophon harasewychi n. sp., Mariasalpinx emilyae n. gen. n. sp.
Chesatrophon chesapeakeanus n. gen. n. sp. Martin 1904 murex snail
Boreotrophon harasewychi n. sp. Petuch 1988 murex snail
Mariasalpinx emilyae n. gen. n. sp. Petuch 1988 murex snail | |
"Scaphellopsis solitaria n. gen." = Scaphella solitaria, Volutifusus mutabilis, Volutifusus asheri n. sp., Volutifusus marylandicus n. sp., Volutifusus meganucleus n. sp., Volutifusus acus n. sp.
"Scaphellopsis solitaria n. gen." = Scaphella solitaria Conrad 1830 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
Volutifusus acus n. sp. Petuch 1988 volute | |
Nodisurculina engonata n. gen., Mariaturricula biscatenaria n. gen.
Nodisurculina engonata n. gen. Conrad 1862 ribbed mitre
Mariaturricula biscatenaria n. gen. Conrad 1834 ribbed mitre | |
Pseudoaptyxis sanctaemariae n. sp., Mariafusus marylandica n. gen.
Pseudoaptyxis sanctaemariae n. sp. Petuch 1988 snail
Mariafusus marylandica n. gen. Martin 1904 snail | |
Ptychosalpinx altilis Conrad 1832 true whelk
Ptychosalpinx pustulosus n. sp. Petuch 1988 true whelk | |
"Turrifulgur fusiforme n. gen." = Busycon fusiformis, Turrifulgur turriculus n. gen. n. sp., Busycotypus rugosum, Busycotypus asheri n. sp., Busycotypus coronatum, Busycotypus alveatum
"Turrifulgur fusiforme n. gen." = Busycon fusiformis Conrad 1840 whelk
Turrifulgur turriculus n. gen. n. sp. whelk
Busycotypus rugosum Conrad 1843 whelk
Busycotypus asheri n. sp. Petuch 1988 whelk
Busycotypus coronatum Conrad 1840 whelk
Busycotypus alveatum Conrad 1863 whelk | |
Mariasveltia lunata n. gen., Marianarona asheri n. gen. n. sp., Marianarona marylandica n. gen. n. sp.
Mariasveltia lunata n. gen. Conrad 1830 snail
Marianarona asheri n. gen. n. sp. Petuch 1988 snail
Marianarona marylandica n. gen. n. sp. Petuch 1988 snail | |
Cymatosyrinx mariana n. sp., Sediliopsis gracilis n. gen., Chesaclava quarlesi n. gen. n. sp., Chesaclava dissimilis n. gen.
Cymatosyrinx mariana n. sp. Petuch 1988 snail
Sediliopsis gracilis n. gen. Conrad 1830 snail
Chesaclava quarlesi n. gen. n. sp. Petuch 1988 snail
Chesaclava dissimilis n. gen. Conrad 1830 snail | |
Chesasyrinx rotifera n. gen.
Chesasyrinx rotifera n. gen. Conrad 1830 snail | |
Conus (Leptoconus) sanctaemariae n. sp. Petuch 1988 cone shell
Propebela marylandica n. sp. Petuch 1988 cone shell
Propebela parva Conrad 1830 cone shell | |
Laevihastula marylandica n. gen. n. sp.
Laevihastula marylandica n. gen. n. sp. Petuch 1988 auger snail | |
Mariadrillia parvoidea n. gen.
Mariadrillia parvoidea n. gen. Martin 1904 snail | |
"Mariacassis caelatum n. gen." = Echinophoria caelatura
"Mariacassis caelatum n. gen." = Echinophoria caelatura Conrad 1830 snail |