Collection Data

Page Contents: Section | Significance | Background | Location & Dates | Taxonomic Contents | Documentation | Description of Collection | Collection Inventory | Collection Assets | Specimen Condition | Container Condition | Label Condition | Label Content | Level of Taxonomic Identification

Twila Bratcher Collection

Section Responsible for Processing (Top)


Significance (Top)

LACM Malacology research associate Twila Bratcher is a terebrid gastropod specialist and her vast worldwide collection of this taxonomically important group of neogastropods is a significant addition to the collection. Included in the 2078 lots/5819 specimens were 19 lots/134 specimens of Pleistocene terebrids (now in the LACMIP collection) and 24 lots/55 paratype specimens.

Background (Top)

The Twila Bratcher terebrid collection was curated during MBPC grant Phase 1 (November 2002-February 2003) by Curatorial Assistant Krista Zala. It was initially donated to LACM in late 1997 through the efforts of then curator James H. McLean. Prior to this donation it was housed at the Hollywood Hills home of Twila Bratcher. Twila published over 40 peer-reviewed papers on the systematics of the terebridae based on her collection culminating with "Living terebras of the world: A monograph of the Recent Terebridae of the world" (with W.O. Cernohorsky) in 1987.

Collection Location and Dates (Top)

Terebrid gastropods are found worldwide from tropics to subtropical and temperate environments with most species being found in the shallow tropical Indo-Pacific. This collection was made over a span of over 40 years. Unfortunately, as with many amateur collections, the emphasis is on where a specimen was collected rather than what environment it inhabited. All specimens have geographic locality, occasionally depth, but little habitat information.

Taxonomic Contents (Top)

The living Terebridae includes the genera Terebra, Hastula, Hastula (Impages), Duplicaria, and Terenolla and 250+ species. All of these genera are represented as are most of the species in the Twila Bratcher collection thus making the LACM holdings of this family one of the largest in the U.S.

Documentation (Top)

Pre-curation documented was almost exclusively hand written labels that accompanied the specimens. A 3" x 5" index card file was also included. The labels are stored with the specimens with up-to-date LACM malacology labels and the card file is stored in the malacology section.

Description of Collection (Top)

This collection is exclusively dry shells, mostly identified to species by the donor prior to its arrival at LACM. It is currently housed in the Malacology collection range at the east end of the 3rd floor.

Collection Inventory (Top)

2078 lots were accessioned in 1997. Of these 2008 were curated by Krista Zala and the remaining 70 lots (fossils and paratypes) were curated by L.T. Groves.

Collection Assets (Top)

No collection assets available.

Specimen Condition (Top)

Date 4: New alcohol needed immediately (specimens will otherwise be irreparably damaged) 3: Containers need to be 'topped off' 2: New alcohol needed within next 6-12 months 1: No curation needed at present
02/01/2003 0% 0% 0% 100%

Container Condition (Top)

Date 4: Immediate short-term (less than 5 years) storage container replacement needed. Present containers are inadequate. Curate in the short-term with plastic buckets, whirltop bags, or similar. 3: Specimens contained in museum-grade long-term (greater than 5 years) storage containers. Jars need new closures (e.g. replace Bakelite and metal lids). 2: Transfer to museum-grade long-term storage containers. Replace or transfer to new jars and glass vials, replace cotton and closures. 1: Containers are museum-grade and meet highest curation standards.
02/01/2003 0% 0% 0% 100%

Label Condition (Top)

Date 4: New labels needed immediately (original labels in poor condition, paper torn/worn, legibility poor). 3: New labels needed within next 1-2 years (original labels beginning to wear, pencil writing fading, low quality paper was used). 2: New labels needed are as a result of curation and accretion of collection. 1: No new labels needed at present.
02/01/2003 0% 0% 0% 100%
02/01/2003 0% 0% 0% 100%

Label Content (Top)

Date 2: New label or additional label needed because original label data is incomplete and supporting documentation provides additional collection data which greately enhances significance and value of each lot. 1: Label content complete. All collection data are contained on label.
02/01/2003 0% 100%

Level of Taxonomic Identification (Top)

Date 7: Not identified 6: Phylum 5: Class 4: Order 3: Family 2: Genus 1: Species
02/01/2003 0% 0% 0% 0% 0% 0% 100%