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Recordset

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CHAS Malacology Collection (Arctos)

Specimen Records: 15,322
Media Records: 0
iDigBio Last Ingested Date: 2018-09-07

The Chicago Academy of Sciences’ malacology collection consists of freshwater, marine, and terrestrial Mollusca, as well as specimens representing Echinodermata, Porifera, Brachiopoda, and Cnidaria. It is the third largest in the state of Illinois with approximately 15,000 specimens, split mainly between gastropods and bivalves. Many specimens are associated with Academy collectors, e.g. William Stimpson (1832-1872) or Frank C. Baker (1867-1942). Other major collectors include Elizabeth Emerson Atwater, William Wirt Calkins, Ruthven Deane, J. H. Handwerk, R. L. Lea, Howard N. Lyon, E. N. King, J. W. Velie, Frank Morley Woodruff, and Mrs. E. C. Wiswall. The collection consists mainly of North American varieties of mollusk, with a strong regional focus on the Midwest. Approximately 24% of domestic lots originated in Illinois. Academy expeditions in the late 1800s and early 1900s contributed a significant number of specimens from California and Florida, while a number of specimens collected by William Stimpson came from the eastern coast of the United States. Additional specimens originated in Bermuda, the Bahamas, Mexico, China, Indonesia, and Japan. Collection includes 7 holotypes and 50 syntypes, and specimens were primarily collected pre-1945.

Contacts

Name Dawn Roberts
RoleDirector of Collections
Emaildroberts@naturemuseum.org
Name Dawn Roberts
RoleDirector of Collections
Emaildroberts@naturemuseum.org
Name Erica Krimmel
RoleAssistant Collections Manager
Emailekrimmel@naturemuseum.org
Name David Bloom
RoleCoordinator
Emaildbloom@vertnet.org
Name John Wieczorek
RoleInformation Architect
Emailtuco@berkeley.edu
Name Dawn Roberts
RoleDirector of Collections
Emaildroberts@naturemuseum.org
  • Data Corrected
  • Data Use
  • Raw
This table shows any data corrections that were performed on this recordset to improve the capabilities of iDigBio Search. The first column represents the correction performed. The last two columns represent the number and percentage of records that were corrected. A complete list of the data quality flags and their descriptions can be found here. Clicking on a data flag name will take you to a search for all records with this flag in this recordset.
FlagRecords With This Flag(%) Percent With This Flag
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77.81
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52.957
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52.957
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52.957
dwc_taxonomicstatus_added  i8114
52.957
gbif_canonicalname_added  i8114
52.957
gbif_genericname_added  i8114
52.957
gbif_taxon_corrected  i8114
52.957
dwc_phylum_replaced  i8105
52.898
dwc_taxonrank_replaced  i8049
52.532
dwc_kingdom_added  i8048
52.526
dwc_scientificnameauthorship_added  i7973
52.036
dwc_class_replaced  i7218
47.109
gbif_reference_added  i6888
44.955
dwc_order_replaced  i6770
44.185
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42.958
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42.958
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40.811
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25.095
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21.799
geopoint_datum_missing  i2823
18.424
taxon_match_failed  i1961
12.799
gbif_vernacularname_added  i1942
12.675
dwc_family_replaced  i969
6.324
dwc_genus_replaced  i889
5.802
dwc_class_added  i879
5.737
dwc_family_added  i258
1.684
rev_geocode_eez  i192
1.253
dwc_kingdom_suspect  i93
0.607
dwc_kingdom_replaced  i66
0.431
dwc_taxonrank_added  i65
0.424
dwc_order_added  i45
0.294
dwc_stateprovince_replaced  i23
0.15
dwc_country_replaced  i12
0.078
dwc_infraspecificepithet_replaced  i10
0.065
dwc_specificepithet_replaced  i6
0.039
dwc_originalnameusageid_added  i5
0.033
dwc_specificepithet_added  i4
0.026
geopoint_0_coord  i1
0.007
geopoint_low_precision  i1
0.007
geopoint_similar_coord  i1
0.007
rev_geocode_failure  i1
0.007
rev_geocode_mismatch  i1
0.007
specimen list