Moa-nalo
The moa-nalo are a group of extinct aberrant, goose-like ducks that lived on the larger Hawaiian Islands, except Hawaiʻi itself, in the Pacific. They were the major herbivores on most of these islands for the last 3 million years or so, until they became extinct after human settlement.
Description
The moa-nalo (the name literally means "lost fowl"; an "s" is not added for the plural) were unknown to science, having been wiped out before the arrival of Captain James Cook (1778), until the early 1980s, when their subfossil remains were discovered in sand dunes on the islands of Molokaʻi and Kauaʻi. Subsequently bones were found on Maui, Oʻahu, and Lānaʻi, in lava tubes, lake beds and sinkholes. They represent four species in three genera so far:
Chelychelynechen quassus (turtle-jawed moa-nalo) from Kauaʻi
Ptaiochen pau (small-billed moa-nalo) from Maui
Thambetochen xanion (O'ahu moa-nalo) from Oʻahu
Thambetochen chauliodous (Maui Nui large-billed moa-nalo) from Maui, Lānaʻi and Molokaʻi (Maui Nui)