Keteiodoros

Type species. Keteiodoros bellense n. sp. Wenlock, New South Wales. No other species are presently known. Derivation of name. Greek XTl 1: £ LOS = sea-monstrous + oop 6 s = leather bag; neuter gender. The name is an allusion to original environment, size, and resemblance to an ovoid football. Diagnosis. Very large and strongly equibiconvex trimerellide brachiopod, each valve with deeply excavated steep-sided platform supported by long median septum; deep umbonal cavities in ventral valve; ventral umbo long, incurved; dorsal umbo strongly incurved, bulbous, fitting against posterior end of ventral platform; long thick longitudinally and transversely curved articulating plate more or less concentric with umbo, extending from dorsal beak almost to surface of ventral platform; valve margins slightly overlapping dorsoventrally in front of flattened zones which served as articulation pivots. Discussion. Because of the unusual morphology of this form, discussion of its relationships follows the specific description.