ammonites
Echinalosia discinia Waterhouse 1986 (lamp shell)

Strophomenata - Productida - Strophalosiidae

Full reference: J. B. Waterhouse. 1986. Taxonomic names, in Late Palaeozoic Scyphozoa and Brachiopoda (Inarticulata, Strophomenida, Productida and Rhynchonellida) from the southeast Bowen Basin, Australia. Palaeontographica Abteilung A 193(1-4):1-76

Belongs to Echinalosia according to D. J. C. Briggs 1998

Sister taxa: Echinalosia ardua, Echinalosia bookeri, Echinalosia curtosa, Echinalosia dejecta, Echinalosia denisoni, Echinalosia glabra, Echinalosia indica, Echinalosia magnispina, Echinalosia maxwelli, Echinalosia mcclungi, Echinalosia melvillensis, Echinalosia minima, Echinalosia nodosa, Echinalosia ovalis, Echinalosia perforata, Echinalosia preovalis, Echinalosia prideri, Echinalosia rarispina, Echinalosia robusta, Echinalosia simpsoni, Echinalosia telfordi, Echinalosia wassi

Type specimen: UQF 70303. Its type locality is UQ L4218, Ross Creek Tributary, Cracow Station, which is in a Kungurian transition zone/lower shoreface sandstone in the Brae Formation of Australia.

Ecology: stationary low-level epifaunal suspension feeder

Average measurements (in mm): shell 25.6 x 31.3, valve 19.5 x 24.4