Dataset

CAS Invertebrate Zoology (IZ)

OBIS USA Open in mapper Explore occurrences

The electronic catalog of the invertebrate zoology collection at the California Academy of Sciences, San Francisco.

Published: December 01, 2025 at 22:52

URL: http://ipt.calacademy.org:8080/resource?r=invz

267,997
occurrence records
11,553
taxa
8,815
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 261,315
97.5%
decimalLatitude 139,149
51.9%
decimalLongitude 139,195
51.9%
eventDate 24,271 37
9.1%
maximumDepthInMeters 211,755 1
79.0%
minimumDepthInMeters 130,477 2
48.7%
occurrenceStatus 267,997
100.0%
scientificName 57
0.0%
scientificNameID 267,997
100.0%

Quality flags

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

Flag Dropped Records
NO_COORD 139,201
51.9%
NO_DEPTH 130,479
48.7%
ON_LAND 18,916
7.1%
NO_MATCH 17,843
6.7%
NOT_MARINE 13,198
4.9%
DEPTH_EXCEEDS_BATH 8,274
3.1%
NO_ACCEPTED_NAME 1,635
0.6%
MARINE_UNSURE 1,629
0.6%
WORMS_ANNOTATION_RESOLVABLE 414
0.2%
WORMS_ANNOTATION_REJECT_AMBIGUOUS 30
0.0%
DATE_IN_FUTURE 24
0.0%
DATE_BEFORE_MIN 13
0.0%
DEPTH_OUT_OF_RANGE 3
0.0%

Measurement types

DNA derived data