|Oyster Bay – Bruny|
|Ethnicity||Oyster Bay, Big River, and Bruny tribes of Tasmanians|
|Eastern coast of Tasmania and interior|
|Linguistic classification||Possibly one of the world's primary language families|
(see Tasmanian languages)
Eastern Tasmanian language families per Bowern (2012)
Bayesian phylogenetic analysis suggests that four (at p < 0.20) to five (at p < 0.15) Eastern Tasmanian languages are recorded in the 26 unmixed Tasmanian word lists (out of 35 lists known). These cannot be shown to be related to other Tasmanian languages based on existing evidence. The languages are:
Two of the lists reported to be from Oyster Bay contain substantial Northeastern admixture (see Northeastern Tasmanian languages), which Bowern believes to be responsible for several classifications linking the languages of the east coast. However, once that admixture is accounted for, the apparent links disappear.
The Flinders Island lingua franca was based primarily on Eastern and Northeastern Tasmanian languages. The English-based Bass Strait Pidgin continued some vocabulary from the lingua franca. The constructed language Palawa kani is based on many of the same languages as the lingua franca.