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 08, 2025 at 22:52

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

269,154
occurrence records
11,571
taxa
8,825
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 262,402
97.5%
decimalLatitude 140,215
52.1%
decimalLongitude 140,261
52.1%
eventDate 24,726 37
9.2%
maximumDepthInMeters 212,811 1
79.1%
minimumDepthInMeters 131,434 2
48.8%
occurrenceStatus 269,154
100.0%
scientificName 57
0.0%
scientificNameID 269,154
100.0%

Quality flags

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

Flag Dropped Records
NO_COORD 140,267
52.1%
NO_DEPTH 131,436
48.8%
ON_LAND 18,929
7.0%
NO_MATCH 18,024
6.7%
NOT_MARINE 13,576
5.0%
DEPTH_EXCEEDS_BATH 8,280
3.1%
NO_ACCEPTED_NAME 1,638
0.6%
MARINE_UNSURE 1,631
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