Dwarf Brachiopoda from early Toarcian Koninckella fauna in Portugal (Polymorphum Zone, Semicelatum subzone), comprising particularly Koninckella liasina, Nannirhynchia pygmaea and Pseudokingena deslongchamps.
Koninckinidae became extinct in the early Toarcian and has minute size and peculiar shape (that is very similar to that of the Paleozoic strophomenids).
Comas-Rengifo, M.J., Duarte, L.V., García Joral, F., Goy, A., 2013. Los braquiópodos del Toarciense Inferior (Jurásico) en el área de Rabaçal-Condeixa (Portugal): distribución estratigráfica y paleobiogeografía. Compt. Rendus Geosci. 100 (1), 37–42.
Comas-Rengifo,M.J., Duarte, L.V., Félix, F.F., García Joral, F., Goy, A., Rocha, R.B., 2015. Latest Pliensbachian–Early Toarcian brachiopod assemblages from the Peniche section (Portugal) and their correlation. Episodes 38, 2–8.