Thecidellina congregata Cooper, 1954

Simon, Eric, Lüter, Carsten, Logan, Alan & Mottequin, Bernard, 2018, Recent thecideide brachiopods (Thecideida, Thecideoidea) from northern Sulawesi (Indonesia) with discovery of a new Thecidellina species (Thecidellinidae), Zootaxa 4526 (4), pp. 481-515 : 494

Comparison with Thecidellina congregata Cooper, 1954

1954 Thecidellina congregata: Cooper , pp. 316–317; pl. 80, figs. 8–13.

1983 Thecidellina congregata: Grant , pp. 82–83; figs. 6–8.

2008 Thecidellina congregata: Logan , pp. 411–412, figs. 6.10–6.17.

2007 Thecidellina maxilla: Bitner, fig. 3F.

2015 Thecidellina maxilla: Bitner, fig. 5A–E.

The adult shell is larger. Brachial cavities have peculiar single canopying spicules that are very massive in the anterior part of the canopies and much thinner in their posterior part ( Cooper 1954, pl. 80, figs. 10–13; Logan, 2008, figs. 6–17). In the smaller shell of T. mawaliana sp. nov. the canopies are made of very thin, fragile spicules all fused together.