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Recordset

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CHAS Malacology Collection (Arctos)

Specimen Records: 15,324
Media Records: 0
iDigBio Last Ingested Date: 2018-12-15

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
dwc_datasetid_added  i12439
81.173
dwc_parentnameusageid_added  i12439
81.173
dwc_taxonid_added  i12439
81.173
dwc_taxonomicstatus_added  i12439
81.173
gbif_canonicalname_added  i12439
81.173
gbif_genericname_added  i12439
81.173
gbif_taxon_corrected  i12439
81.173
dwc_scientificnameauthorship_added  i12153
79.307
idigbio_isocountrycode_added  i11924
77.813
gbif_reference_added  i9974
65.087
dwc_multimedia_added  i8156
53.224
gbif_vernacularname_added  i7773
50.724
dwc_taxonrank_replaced  i6420
41.895
dwc_originalnameusageid_added  i5391
35.18
dwc_continent_replaced  i3845
25.091
geopoint_datum_missing  i3441
22.455
dwc_order_replaced  i2620
17.097
taxon_match_failed  i2286
14.918
dwc_taxonrank_added  i1323
8.634
dwc_order_added  i872
5.69
dwc_specificepithet_added  i840
5.482
dwc_family_replaced  i488
3.185
dwc_genus_replaced  i468
3.054
dwc_family_added  i428
2.793
dwc_specificepithet_replaced  i343
2.238
dwc_genus_added  i304
1.984
dwc_class_replaced  i250
1.631
dwc_phylum_replaced  i232
1.514
rev_geocode_eez  i192
1.253
dwc_kingdom_suspect  i130
0.848
dwc_kingdom_added  i91
0.594
dwc_taxonremarks_added  i83
0.542
dwc_phylum_added  i77
0.502
dwc_class_added  i25
0.163
dwc_stateprovince_replaced  i23
0.15
dwc_infraspecificepithet_added  i21
0.137
dwc_country_replaced  i12
0.078
geopoint_datum_error  i10
0.065
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