External link - check-lists
Czechia: Acrosaccus vexatus (Barrande, 1879)
United States of America: Acrotretella siluriana Ireland, 1961
Czechia: Acrotretella siluriana Ireland, 1961
Oklahoma: Acrotretella siluriana Ireland, 1961
Czechia: Acrotretella spinosa Mergl, 2001
Czechia: Acrotretella triseptata Mergl, 2001
Czechia: Artiotreta krizi Mergl, 2001
United States of America: Artiotreta parva Ireland, 1961
Oklahoma: Artiotreta parva Ireland, 1961
Czechia: Barrandeoglossa bohemica (Barrande, 1879)
Czechia: Barrandeoglossa fissurata (Barrande, 1879)
Czechia: Barrandeoglossa perneri Mergl, 2001
Czechia: Bicarinatina Batrukova, 1969
Czechia: Careniellus carens (Barrande, 1879)
Czechia: Chynithele ventricona Havlíček, 1996
United States of America: Dysoristus lochmanae Bell, 1944
Nevada: Dysoristus lochmanae Bell, 1944
Czechia: Dysoristus posterus Mergl, 2001 = Orbaspina postera (Mergl, 2001)
Czechia: Havlicekion holynensis Mergl, 2001
Czechia: Havlicekion ivanensis Mergl, 2001
Australia: Havlicekion robustum (Brock et al., 1995)
Czechia: Havlicekion splendidus Mergl, 2001
Czechia: Ivanothele mordor Mergl, 1996
Czechia: Kacakiella bouceki Mergl, 2001
Czechia: Kosagittella clara Mergl, 2001
Czechia: Kosagittella lingua (Barrande, 1879)
Czechia: Kosagittella pinguis Mergl, 2001
Czechia: Kosoidea fissurella Havlíček et Mergl, 1988
Czechia: Lingulops barrandei Mergl, 1999
Czechia: Lingulops fragilis Mergl, 2001
United States of America: Lingulops whitfieldi Hall, 1872
Czechia: Lochkothele intermedia (Barrande, 1879) 
Czechia: Opatrilkiella minuta Mergl, 2001
Australia: Opsiconidion aldridgei (Cocks, 1979)
Canada: Opsiconidion arcticon Ludvigsen, 1974
Australia: Opsiconidion arcticon Ludvigsen, 1974
Yukon: Opsiconidion arcticon Ludvigsen, 1974
Austria: Opsiconidion celloni (Cocks, 1979)
Czechia: Opsiconidion decessus Mergl, 2001
Czechia: Opsiconidion ephemerus (Mergl, 1982)
Russia: Opsiconidion minor Popov, 1981
Australia: Opsiconidion minor Popov, 1981
Novaya Zemlya: Opsiconidion minor Popov, 1981
Poland: Opsiconidion podlasiensis Biernat, 1984
Estonia: Opsiconidion praecursor Popov et al., 1994
Czechia: Opsiconidion simplex Mergl, 2001
Czechia: Orbiculoidea bohemica (Barrande, 1879)
Czechia: Orbiculoidea bubovicensis Mergl, 2001
United Kingdom: Orbiculoidea forbesii (Davidson, 1848)
Czechia: Orbiculoidea karlstejnensis Mergl, 1996
Czechia: Orbiculoidea magnifica Mergl, 2001
Czechia: Orbiculoidea patelliformis (Barrande, 1879)
Czechia: Orbiculoidea snajdri Mergl, 2001
Czechia: Orbiculoidea tarda (Barrande, 1879)
Czechia: Paterula argus Mergl, 1999
Czechia: Paterula holynensis Mergl, 2001
Czechia: Praeoehlertella georgiana Mergl, 2001
Czechia: Praeoehlertella umbrosa Mergl, 2001
Czechia: Prastavia distincta Mergl, 2001
Czechia: Pseudolingula dilatata (Barrande, 1879)
Czechia: Schizotreta rarissima (Barrande, 1879)
Czechia: Sterbinella daphne Mergl, 2001
Czechia: Wadiglossa perlonga (Barrande, 1879)
Libya: Wadiglossa supramarginalis Havlíček, 1984