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LACM Malacology

Specimen Records: 140,416
Media Records: 211
iDigBio Last Ingested Date: 2026-03-25

The James H. McLean Mollusk Collection of the LACM Malacology Department is one of the largest recent mollusk collections in North America and the world … and is the largest of its kind on the Pacific Rim. The collection is predominantly dry material with lesser amounts of wet preserved specimens and includes material from all molluscan classes. It is worldwide in scope with an emphasis on the eastern Pacific Ocean (arctic Alaska to southern Chile) and includes an estimated 500,000 lots containing approximately 4.5 million specimens. Over 120,000 lots have been electronically captured, which includes over 2,300 type lots. Renowned acquired collections include those from the University of California, Los Angeles (UCLA) and the Alan Hancock Foundation at the University of Southern California (USC).

Contacts

Name Lindsey Groves
RoleCollection Manager
Emaillgroves@nhm.org
Name William Mertz
RoleDatabase Manager
Emailwmertz@nhm.org
Name Lindsey Groves
RoleCollection Manager
Emaillgroves@nhm.org
Name William Mertz
RoleDatabase Manager
Emailwmertz@nhm.org
Name Erica Krimmel
Rolenone
Emailekrimmel@nhm.org
Name Lindsey Groves
RoleCollection Manager
Emaillgroves@nhm.org
Name William Mertz
RoleDatabase Manager
Emailwmertz@nhm.org
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
idigbio_isocountrycode_added  i120660
85.93
dwc_datasetid_added  i117113
83.404
dwc_parentnameusageid_added  i117113
83.404
dwc_taxonid_added  i117113
83.404
dwc_taxonomicstatus_added  i117113
83.404
gbif_canonicalname_added  i117113
83.404
gbif_genericname_added  i117113
83.404
gbif_taxon_corrected  i117113
83.404
gbif_reference_added  i99605
70.936
dwc_scientificnameauthorship_replaced  i83497
59.464
dwc_order_replaced  i69219
49.296
dwc_multimedia_added  i66494
47.355
dwc_originalnameusageid_added  i65910
46.939
geopoint_datum_missing  i64549
45.97
dwc_taxonrank_replaced  i63752
45.402
gbif_vernacularname_added  i62220
44.311
rev_geocode_eez  i45333
32.285
dwc_continent_replaced  i30397
21.648
taxon_match_failed  i22169
15.788
dwc_specificepithet_replaced  i10065
7.168
dwc_genus_replaced  i8103
5.771
dwc_family_replaced  i7693
5.479
dwc_taxonremarks_added  i1188
0.846
dwc_specificepithet_added  i897
0.639
geopoint_low_precision  i761
0.542
rev_geocode_mismatch  i510
0.363
rev_geocode_failure  i255
0.182
dwc_country_replaced  i239
0.17
dwc_infraspecificepithet_added  i134
0.095
dwc_scientificnameauthorship_added  i40
0.028
dwc_class_replaced  i34
0.024
dwc_genus_added  i29
0.021
dwc_kingdom_suspect  i22
0.016
dwc_stateprovince_replaced  i21
0.015
dwc_phylum_replaced  i20
0.014
dwc_order_added  i14
0.01
dwc_infraspecificepithet_replaced  i5
0.004
rev_geocode_corrected  i5
0.004
datecollected_bounds  i2
0.001
geopoint_0_coord  i2
0.001
rev_geocode_eez_corrected  i2
0.001
rev_geocode_flip_both_sign  i2
0.001
rev_geocode_lon_sign  i2
0.001
dwc_class_added  i1
0.001
dwc_family_added  i1
0.001
geopoint_similar_coord  i1
0.001
rev_geocode_lat_sign  i1
0.001