CAS Invertebrate Zoology (IZ)

Latest version published by California Academy of Sciences on Apr 8, 2024 California Academy of Sciences

Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

Data as a DwC-A file download 249,758 records in English (24 MB) - Update frequency: unknown
Metadata as an EML file download in English (7 KB)
Metadata as an RTF file download in English (5 KB)


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

Data Records

The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 249,758 records.

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.


The table below shows only published versions of the resource that are publicly accessible.


Researchers should respect the following rights statement:

The publisher and rights holder of this work is California Academy of Sciences. To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: 44bcde48-ac71-46f2-bf73-24fc3c008b6c.  California Academy of Sciences publishes this resource, and is itself registered in GBIF as a data publisher endorsed by U.S. Geological Survey.


Occurrence; Specimen; Occurrence


Christina Piotrowski
  • Originator
  • Point Of Contact
IZ Collections Manager, Department of Invertebrate Zoology & Geology
California Academy of Sciences
55 Music Concourse Dr.
94118 San Francisco
+1 (415) 379-5256
Jon Fong
  • Metadata Provider
California Academy of Sciences
55 Music Concourse Dr.
94118 San Francisco
+1 (415) 379-5280

Geographic Coverage

Invertebrate animals from global localities, with an emphasis in the eastern Pacific and Indopacific. (Animalia less vertebrates, insects, arachnids, and myriapods). The collection holds an estimated 15,000,000 specimens in 750,000 lots. Approximately half of the collection is stored in fluid preservative, the other half is dry preserved.

Bounding Coordinates South West [-90, -180], North East [90, 180]

Additional Metadata

Alternative Identifiers 44bcde48-ac71-46f2-bf73-24fc3c008b6c