| Red List Category & Criteria: |
Extinct
ver 2.3
|
| Year Published: |
2000 |
| Assessor/s: |
Bogan, A.E. (Mollusc Specialist Group) |
| Reviewer/s: |
Seddon, M.B. (Mollusc Red List Authority) |
Justification:
A. robusta was only ever known from the type specimens and was listed as Critically Endangered in 1996 (Baillie and Groombridge 1996) due to uncertainty about whether surveys had been carried out. More recent information concludes that it is Extinct.
|
| History: |
| 1996 |
– |
Critically Endangered
|
| 1994 |
– |
Extinct
(Groombridge 1994)
|
| 1990 |
– |
Endangered
(IUCN 1990)
|
| 1988 |
– |
Endangered
(IUCN Conservation Monitoring Centre 1988)
|
| 1986 |
– |
Indeterminate
(IUCN Conservation Monitoring Centre 1986)
|
|
