Belair Drive stream, Bowie: Maastrichtian, Maryland
collected by Glaser, Hartstein, Decina, Keil 1986–1999

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes - Myliobatiformes - Myliobatidae
Myliobatis sp. Cuvier 1816
Hartstein et al. 1999
Chondrichthyes - Myliobatiformes - Rhombodontidae
Rhombodus binkhorsti Dames 1881
Hartstein et al. 1999
Chondrichthyes - Myliobatiformes - Dasyatidae
Dasyatis sp. Rafinesque 1810
Hartstein et al. 1999
Chondrichthyes - Hybodontiformes - Hybodontidae
Hybodus sp. Agassiz 1834
Hartstein et al. 1999 1 specimen
cephalic hook
Chondrichthyes - Heterodontiformes - Heterodontidae
Heterodontus sp. de Blainville 1816
Hartstein et al. 1999
Chondrichthyes - Squatinidae
Squatina hassei Leriche 1929
Hartstein et al. 1999
Chondrichthyes - Rajiformes - Rajidae
Raja farishi
Hartstein et al. 1999
Chondrichthyes - Rajiformes
Ewingia problematica Case and Cappetta 1997
Hartstein et al. 1999
recombined as Tomewingia problematica
Pseudohypolophus menultyi
Hartstein et al. 1999
Chondrichthyes - Rajiformes - Rhinobatidae
Rhinobatos sp. Link 1790
Hartstein et al. 1999
Chondrichthyes - Rajiformes - Ptychotrygonidae
Ptychotrygon vermiculata Cappetta 1975
Hartstein et al. 1999
Chondrichthyes - Rajiformes - Sclerorhynchidae
Ischyrhiza cf. avonicola Estes 1964
Hartstein et al. 1999
Ischyrhiza mira Leidy 1856
Hartstein et al. 1999
Chondrichthyes - Carcharhiniformes - Triakidae
Galeorhinus giradoti
Hartstein et al. 1999
Chondrichthyes - Orectolobiformes - Ginglymostomatidae
Plicatoscyllium antiquum
Hartstein et al. 1999
Plicatoscyllium derameei Case and Cappetta 1997
Hartstein et al. 1999
Ginglymostoma sp. Müller and Henle 1838
Hartstein et al. 1999
Chondrichthyes - Orectolobiformes - Hemiscylliidae
Chiloscyllium greeni (Cappetta 1973)
Hartstein et al. 1999
Chondrichthyes - Lamniformes - Odontaspididae
Odontaspis aculeatus (Cappetta and Case 1975)
Hartstein et al. 1999
Chondrichthyes - Lamniformes - Carchariidae
Carcharias samhammeri (Cappetta and Case 1975)
Hartstein et al. 1999
Carcharias holmdelensis (Cappetta and Case 1975)
Hartstein et al. 1999
Chondrichthyes - Lamniformes - Serratolamnidae
Lamna sp. Cuvier 1816
    = Serratolamna serrata Agassiz 1838
Hartstein et al. 1999
Chondrichthyes - Lamniformes - Anacoracidae
Squalicorax pristodontus (Agassiz 1835)
Hartstein et al. 1999
Squalicorax kaupi (Agassiz 1843)
Hartstein et al. 1999
Chondrichthyes - Lamniformes - Otodontidae
Cretolamna appendiculata (Agassiz 1835)
Hartstein et al. 1999
recombined as Cretalamna appendiculata
Chondrichthyes - Chimaeriformes - Callorhynchidae
Ischyodus sp. Egerton 1843
Hartstein et al. 1999
Acipenseriformes
Cylindracanthus sp. Leidy 1856
Hartstein et al. 1999
Reptilia - Testudines
Peritresius ornatus (Leidy 1856)
Hartstein et al. 1999
Trionyx priscus Cope 1869
Hartstein et al. 1999
nomen dubium belonging to Pantrionychidae
Chelonia indet. (Latreille 1800)
Hartstein et al. 1999
synonym of Testudines
Reptilia - Mosasauridae
Mosasaurus sp. Parkinson 1822
Hartstein et al. 1999
teeth
Mosasaurus ? maximus Cope 1869
Hartstein et al. 1999 1 specimen
synonym of Mosasaurus hoffmannii
tooth
Reptilia - Crocodylia
Crocodylia indet. (Owen 1842)
Hartstein et al. 1999
vertebrae
Reptilia
Thoracosaurus neocesariensis (De Kay 1842)
Hartstein et al. 1999
Goniopholis sp. Owen 1842
    = cf. Allognathosuchus sp. Mook 1921
Hartstein et al. 1999
Bottosaurus harlani (Meyer 1832)
Hartstein et al. 1999
Deinosuchus rugosus (Emmons 1858)
Hartstein et al. 1999 1 specimen
original and current combination Polyptchodon rugosus
tooth
Reptilia - Hadrosauridae
Hadrosauridae indet. Cope 1869
Hartstein et al. 1999
teeth
Reptilia - Ornithomimidae
Ornithomimidae indet. Marsh 1890
Hartstein et al. 1999 1 specimen
pedal phalanx
Reptilia - Plesiosauria - Elasmosauridae
Cimoliasaurus magnus (Leidy 1851)
Hartstein et al. 1999 3 specimens
original and current combination Cimoliosaurus magnus
2 teeth, 1 vertebra
Actinopteri - Pycnodontiformes - Pycnodontidae
Pycnodus cf. phaseolus Hay 1899
Hartstein et al. 1999
recombined as Anomoeodus phaseolus
Hadrodus sp. Leidy 1857
Hartstein et al. 1999
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus sp. Agassiz 1843
Hartstein et al. 1999
Actinopteri - Aulopiformes - Enchodontidae
Enchodus ferox Leidy 1855
Hartstein et al. 1999
Actinopteri - Elopiformes - Phyllodontidae
Egertonia sp. Cocchi 1866
Hartstein et al. 1999
Paralbula casei Estes 1969
Hartstein et al. 1999
Actinopteri - Albuliformes - Albulidae
Albulidae indet. Bleeker 1859
Hartstein et al. 1999
see common names

Geography
Country:United States State/province:Maryland County:Prince George's
Coordinates: 39.0° North, 76.7° West (view map)
Paleocoordinates:39.8° North, 52.1° West
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
Key time interval:Maastrichtian
Age range of interval:72.10000 - 66.00000 m.y. ago
Stratigraphy
Formation:Severn
Stratigraphic resolution:bed
Lithology and environment
Primary lithology:concretionary,pebbly,phosphatic,sideritic,gray sandstone
Includes fossils?Y
Lithology description: "a thin bed of compact pale-gray sand...containing scattered quartz pebbles, dark phosphate lumps, teeth, and large siderite concretions, overlies a dark-gray, dense micaceous silty clay which is the top of the Matawan Formation."
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Disassociated major elements:many
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:surface (float),surface (in situ),field collection
Reason for describing collection:general faunal/floral analysis
Collectors:Glaser, Hartstein, Decina, Keil Collection dates:1986–1999
Metadata
Database number:83331
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2008-08-18 08:10:18 Last modified:2023-06-15 10:58:16
Access level:the public Released:2008-08-18 08:10:18
Creative Commons license:CC BY
Reference information

Primary reference:

27982.ETE J. D. Glaser. 1979. Collecting fossils in Maryland. Maryland Geological Survey Educational Series 4:1-83 [M. Carrano/M. Carrano]

Secondary references:

40545 E. F. Hartstein, L. E. Decina, and R. F. Keil. 1999. A Late Cretaceous (Severn Formation) Vertebrate Assemblage from Bowie, Maryland. The Mosasaur 6:17-23 [M. Uhen/M. Shalap/M. Shalap]
85047 D. B. Weishampel and L. Young. 1996. Dinosaurs of the East Coast xiii-275 [M. Carrano/M. Carrano]