Overview

Distribution

endemic to a single nation

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National Distribution

United States

Origin: Native

Regularity: Regularly occurring

Currently: Absent

Confidence: Confident

Type of Residency: Year-round

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Global Range: (Zero (no occurrences believed extant)) Formerly known only from San Diego Bay, California, but currently extinct (See Turgeon et al., 1998).

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Ecology

Population Biology

Number of Occurrences

Note: For many non-migratory species, occurrences are roughly equivalent to populations.

Estimated Number of Occurrences: 0 (zero)

Comments: Formerly known only from San Diego Bay, California, but currently extinct (See Turgeon et al., 1998).

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Global Abundance

Zero, no individuals known extant

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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: NX - Presumed Extirpated

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NatureServe Conservation Status

Rounded Global Status Rank: GX - Presumed Extinct

Reasons: Formerly known only from San Diego Bay, California, but currently extinct (See Turgeon et al., 1998).

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Management

Global Protection: None. No occurrences appropriately protected and managed

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