Dataset

Malacology Collection at the Academy of Natural Sciences of Philadelphia

OBIS USA MeasurementOrFact Open in mapper Explore occurrences

This database contains records related to about 500,000 lots maintained in the malacology department. at the Academy of Natural Sciences of Philadephia. These records are derived from detailed computer records for material entering the collection since 1976, and records digitized from the handwritten catalogues, which were started in 1889. an inventory started in 2011 that has recorded the current placement in the collection of more than 412,000 lots, and images of specimens and labels, particularly for type lots. This material is based upon work supported in part by the National Science Foundation under grant numbers DEB-9249109, DEB-9408267, DEB-9616621, DBI-9728996, DBI-1203605, DBI-1902328, and DBI 2001570. Any opinions, findings, conclusions or recommendations presented in this material are only those of the grantees and do not necessarily reflect the views of the National Science Foundation.

Published: July 15, 2025 at 10:08

URL: https://invertebase.org/portal/content/dwca/ANSP-MAL_DwC-A.zip

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Malacology Collection at the Academy of Natural Sciences of Philadelphia
Malacology Collection at the Academy of Natural Sciences of Philadelphia

Gary Rosenberg

497,781
occurrence records
68,970
measurements and facts
12,672
taxa
11,298
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 495,588
99.6%
decimalLatitude 163,319
32.8%
decimalLongitude 163,285
32.8%
eventDate 216,673
43.5%
maximumDepthInMeters 432,158 1
86.8%
minimumDepthInMeters 432,098 1
86.8%
occurrenceStatus 497,781
100.0%
scientificName 563
0.1%
scientificNameID 497,781
100.0%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag Dropped Records
NO_DEPTH 432,099
86.8%
ON_LAND 238,274
47.9%
NOT_MARINE 205,434
41.3%
NO_COORD 163,337
32.8%
NO_MATCH 65,376
13.1%
DEPTH_EXCEEDS_BATH 13,990
2.8%
NO_ACCEPTED_NAME 2,041
0.4%
MARINE_UNSURE 1,976
0.4%
MIN_DEPTH_EXCEEDS_MAX 44
0.0%
WORMS_ANNOTATION_RESOLVABLE 43
0.0%
DEPTH_OUT_OF_RANGE 1
0.0%

Measurement types

DNA derived data