| Country | United States (contiguous states) | Ecosystem | |
| Locality | MD (Chesapeake Bay and its offshore waters) | Depth | |
| Introduced | Year Intro. | ||
| Life Stage | not specified | unsexed | |
| Quantitative | Unit | ||
| Semi Quantitative | Unit | ||
| Qualitative | absent | ||
| Year | Period | 1950-1974 | |
| Date | 2999-01-01 00:00:00 - 2999-01-01 00:00:00 | Record Type | |
| Record Type | |||
| Seasonal | Method | ||
| Remarks | "Date of observation not specified. Period follows publication year of the reference" | ||