Calvert Cliffs Nuclear Power Plant, Zone 17 (Miocene of the United States)

Where: Prince Georges County, Maryland (38.4° N, 76.4° W: paleocoordinates 38.6° N, 73.6° W)

• coordinate estimated from map

When: Drumcliff Member (Choptank Formation), Serravallian (13.8 - 11.6 Ma)

Environment/lithology: shoreface; sandstone

• Mollusk-dense pale yellow-brown to pale orange well-sorted sand; sub-tropical to temperate, in a current-swept channel-like basin

Size class: macrofossils

Preservation: original phosphate

Primary reference: S. J. Godfrey and A. J. Fuller. 2005. Fossil beaked whales (Ziphiidae) from Calvert Cliffs. Bugeye Times 30(2):1-10 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 70546: authorized by Mark Uhen, entered by Mark Uhen on 28.03.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Stephanogonia
  -
Biddulphia
  - Biddulphiaceae
Biddulphia semicircularis1 Brightwel 1853
Biddulphia tuomeyi1 Bailey 1844
Biddulphia aurita1 Kützing 1930
var obtusa
Hemiaulus
  - Biddulphiaceae
Hemiaulus polymorphus1 Grunow 1884
var virginica
Pleurosigma
  -
Pleurosigma affine1 Grunow 1880
var marylandica
Periptera tetracladia
  -
Periptera tetracladia1 Ehrenberg 1845
Bacillariophyceae
 Paraliales - Paraliaceae
Paralia sulcata1 Ehrenberg 1838 diatom
 Naviculales - Naviculaceae
Navicula pennata1 Schmidt 1876 diatom
Navicula hennedyi1 Smith 1856 diatom
Navicula lyra1 Ehrenberg 1843 diatom
 Naviculales - Diploneidaceae
Diploneis crabro1 Ehrenberg 1844 diatom
 Achnanthales - Cocconeidaceae
Cocconeis sp.1 Ehrenberg 1838 diatom
 Coscinodiscales - Coscinodiscaceae
Coscinodiscus marginatus1 Ehrenberg 1839 diatom
Coscinodiscus radiatus1 Ehrenberg 1841 diatom
Coscinodiscus oculusiridis1 Ehrenberg 1841 diatom
Coscinodiscus curvatulus1 Grunow 1878 diatom
Coscinodiscus apiculatus1 Ehrenberg 1844 diatom
Coscinodiscus perforatus1 Ehrenberg 1844 diatom
var cellulosa, pavillardi
Coscinodiscus rothii1 Ehrenberg 1854 diatom
Coscinodiscus inclusus1 Rattray 1889 diatom
Coscinodiscus vetustissimus1 Pantocsek 1886 diatom
Craspedodiscus coscinodiscus1 Ehrenberg 1845 diatom
 Coscinodiscales - Heliopeltaceae
Actinoptychus marylandicus n. sp.1 Andrews 1976 diatom
Actinoptychus virginicus1 Grunow 1883 diatom
 Centrales - Eupodiscaceae
Rattrayella inconspicua1 Rattray 1888 diatom
Triceratium condecorum1 Ehrenberg 1845 diatom
 Melosirales - Stephanopyxidaceae
Stephanopyxis corona1 Ehrenberg 1845 diatom
Stephanopyxis turris1 Greville and Arnot 1857 diatom
Stephanopyxis lineata1 Ehrenberg 1854 diatom
 Melosirales - Melosiraceae
"Paralia complexa" = Melosira complexa1 Lohman 1948 diatom
Melosira westii1 Smith 1856 diatom
Pyxidicula cruciata1 Ehrenberg 1843 diatom
 Melosirales - Hyalodiscaceae
Hyalodiscus laevis1 Ehrenberg 1845 diatom
  -
Xanthiopyxis microspinosa n. sp.1 Andrews 1976 diatom
 Thalassionematales - Thalassionemataceae
Thalassionema obtusa1 Grunow 1881 diatom
Thalassiothrix longissima1 Cleve and Grunow 1880 diatom
 Biddulphiales - Terpsinoaceae
Terpsinoe americana1 Bailey 1854 diatom
  - Hemidiscaceae
Actinocyclus ingens1 Rattray 1890 diatom
Actinocyclus octonarius1 Ehrenberg 1838 diatom
Actinocyclus ellipticus1 Grunow 1883 diatom
Actinocyclus tenellus1 Brébisson 1854 diatom
 Hemiaulales - Hemiaulaceae
Eucampia virginica1 Grunow 1882 diatom
  -
Pseudopyxilla americana1 Ehrenberg 1843 diatom
Goniothecium rogersii1 Ehrenberg 1843 diatom
Liradiscus asperulus n. sp.1 Andrews 1976 diatom
Liradiscus ovalis1 Greville 1865 diatom
 Thalassiophysales - Catenulaceae
Amphora sp.1 Kützing 1844 diatom
Chondrichthyes
 Carcharhiniformes - Carcharhinidae
Carcharhinus sp.2 de Blainville 1816 requiem shark
Mammalia
 Cetacea - Ziphiidae
Ziphiidae indet. Gray 1850 beaked whale
 Placentalia -
Carnivora indet.2 Bowdich 1821 carnivoran
Grammatophora
  -
Grammatophora angulosa1 Ehrenberg 1841