Pelecanoides miokuaka is an extinct species of diving petrel of New Zealand. Described in 2007, it is known only from a single humerus bone that was discovered from early Miocene sediments of the Manuherikia Group.
The humerus has a maximum distal width (through the condyles) of 6.4 millimetres, with a shaft width at the proximal side of the dorsal supracondylar process of 3.6 millimetres. It is similar in size to the South Georgia diving petrel (Pelecanoides georgicus ), and slightly smaller than the common diving petrel (Pelecanoides urinatrix ). Several characteristics distinguish it from these and all other Pelecanoides species. Within the brachial fossa, the impression of its musculus brachialis anticus is deeper, and extends dorsally to the base of the dorsal supracondylar process. The ventral condyle is not linked to the ventral supracondylar tubercle by a ridge; as a result, the facies between the ventral supracondylar tubercle and the ventral condyle are flat rather than housing a broad fossa, and the ventral epicondyle has smaller ligamental attachment points and is smaller than other Pelecanoides.
