Ten extinct languages and their language families:
- Mahican (Eastern Algonquian)
- Wiyot (Algic)
- Jewish Babylonian Aramaic (Aramaic)
- Unami (Eastern Algonquian)
- Galwegian Gaelic (Goidelic)
- Salinan (Hokan)
- Quiripi (Eastern Algonquian)
- Baicawa (Maipurean)
- Ohlone (Costanoan)
- Yahi (Hokan)
There are thirty Algonquian languages; 19 of them are extinct, and the other 11 are classified as endangered. A related language, Yurok, is thought to have only 10 remaining speakers.