Amherst Collection at Mule Creek: Campanian, Wyoming
collected by Amherst College 1903

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Myalinida - Inoceramidae
Inoceramus sagensis
var. nebrascensis
Inoceramus crispii
var. barbabini
Bivalvia - Pectinida - Entoliidae
Syncyclonema rigida
Bivalvia - Pectinida - Pectinidae
Chlamys nebrascensis
Bivalvia - Pectinida - Oxytomidae
Pteria nebrascana (Evans and Shumard 1857)
Bivalvia - Ostreida - Pteriidae
Pteria linguiformis
Bivalvia - Cardiida - Veneridae
Callista deweyi
Callista peplucida
Bivalvia - Cardiida - Cardiidae
Protocardia rara
Bivalvia - Protobranchia - Nuculanidae
Nuculana ? equilateralis
Bivalvia - Protobranchia - Yoldiidae
Yoldia ventricosa
Gastropoda - Neogastropoda - Fasciolariidae
Fasciolaria ? flexicostata
Gastropoda - Aporrhaidae
Aporrhais biangulata
Gastropoda - Vanikoridae
Vanikoro ambigua
Gastropoda - Siphonariidae
Anisomyon subovulatus
Entalis ? paupercula
Cephalopoda - Ammonitida - Heteroceratidae
Heteroceras ? cochleatum
Chondrichthyes - Carchariniformes - Carcharhinidae
Corax sp. Agassiz 1843
5 specimens
synonym of Galeocerdo
two teeth and three strings of vertebrae
Heteromi - Stratodontidae
Empo sp. Cope 1872
1 specimen
skull bones and vertebrae
Actinopteri - Clupeiformes - Clupeoidei
Portheus sp. Cope 1871
1 specimen
one pair of lower jaws
Actinopteri - Ichthyodectiformes - Saurodontidae
Saurocephalus sp. Harlan 1824
2 specimens
two crushed skulls
Actinopteri - Ichthyodectiformes - Ichthyodectidae
Ichthyodectes sp. Cope 1870
20 specimens
18 strings of vertebrae, portions of the tail, dentale, and maxilla
Actinopteri - Crossognathiformes - Pachyrhizodontidae
Pachyrhizodus sp. Agassiz 1850
1 specimen
Reptilia - Squamata - Mosasauridae
Platecarpus brachycephalus Loomis 1915
16 specimens
nomen dubium belonging to Platecarpus
many parts of skeletons
Reptilia - Sauropterygia - Elasmosauridae
Elasmosaurus sp. Cope 1868
2 specimens
one paddle and part of a second
see common names

Country:United States State/province:Wyoming County:Niobrara
Coordinates: 43.3° North, 104.2° West (view map)
Paleocoordinates:49.2° North, 71.6° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
Key time interval:Campanian
Age range of interval:83.60000 - 72.10000 m.y. ago
Geological group:Montana Formation:Pierre Shale
Stratigraphic resolution:formation
Lithology and environment
Primary lithology: "shale"
Includes fossils?Y
Environment:marine indet.
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:medium
Abundance in sediment:common
Spatial resolution:parautochthonous
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:survey of museum collection
Reason for describing collection:general faunal/floral analysis
Collectors:Amherst College Collection dates:1903
Database number:105717
Authorizer:M. Carrano Enterer:H. Street
Modifier:M. Carrano Research group:vertebrate
Created:2011-02-24 07:23:31 Last modified:2012-01-31 17:10:33
Access level:the public Released:2011-02-24 07:23:31
Creative Commons license:CC BY
Reference information

Primary reference:

35291. F. B. Loomis. 1915. A new mosasaur from the Fort Pierre. American Journal of Science 39(233):555-566 [M. Carrano/H. Street]

Secondary references:

35745ETE D. A. Russell. 1964. The Skull of American Mosasaurs. 1-386 [M. Carrano/H. Street/P. Wagner]