Scientific Name	Distribution	Year
Acanthonchus californicus		1947
Acanthonchus cobbi	Western Central Atlantic.	1951
Acanthonchus duplex	Western Central Atlantic.	1947
Acanthonchus duplicatus	Northwest Pacific	1959
Acanthonchus gracilis	Northeast Atlantic	1918
Acanthonchus rostratus	Northeast Atlantic	1959
Acanthonchus viviparus	Northeast Atlantic	1920
Achromadora aetiopica	Northeast Atlantic	1933
Achromadora ambigua	Northeast Atlantic	1938
Achromadora dubia	Northeast Atlantic	1873
Achromadora longicauda	Northeast Atlantic	1937
Achromadora longiseta	Northeast Atlantic	1951
Achromadora papuana	Northeast Atlantic	1899
Achromadora ruricola	Northeast Atlantic	1880
Achromadora semiarmata	Southeast Pacific	1952
Achromadora subdubia	Southeast Pacific	1971
Achromadora tenax	Southeast Pacific	1876
Achromadora terricola	Southeast Pacific	1880
Biarmifer cochleatus	Southeast Pacific	1954
Biarmifer laminatus	Southeast Pacific	1954
Boreomicrolaimoides problematicus	Southeast Pacific	1918
Choanolaimus psammophilus	Northeast Atlantic	1880
Craspodema octogoniata	Northeast Atlantic	1954
Craspodema reflectans	Northeast Atlantic	1964
Cyatholaimus canariensis	Northeast Atlantic	1921
Cyatholaimus gracilis	Northeast Atlantic	1863
Cyatholaimus ocellatus	Northeast Atlantic	1965
Cyatholaimus prinzi	Northeast Atlantic	1870
Cyatholaimus unalaskensis	Northeast Atlantic	1957
Dentatonema crassum	Northeast Atlantic	1928
Dispira punctata	Northeast Atlantic	1933
Dispirella truncata	Northeast Atlantic	1933
Gomphionema fellator	Northeast Atlantic	1966
Gomphionema typicum	Northeast Atlantic	1966
Heterocyatholaimus macrolaimus	Northeast Atlantic	1935
Longicyatholaimus longicaudatus	Northeast Atlantic	1876
Longicyatholaimus marilyniae	Northeast Atlantic	1972
Longicyatholaimus trichocauda	Northeast Atlantic	1955
Marilynia annae	Northeast Atlantic	1967
Marilynia eratos	Northeast Atlantic	1972
Marilynia macrodentata	Northeast Atlantic	1959
Marilynia oculissoma	Northeast Atlantic	1972
Marilynia preclara	Northeast Atlantic	1972
Marilynia quadriseta	Northeast Atlantic	1954
Metacyatholaimus brevicollis	Northeast Atlantic	1898
Metacyatholaimus cylindribucca	Northeast Atlantic	1950
Metacyatholaimus hirschi	Northeast Atlantic	1942
Metacyatholaimus spatiosus	Northeast Atlantic	1954
Micracanthonchus tenuicaudatus	Northeast Atlantic	1959
Nannolaimoides armatus	Northeast Atlantic	1964
Nannolaimoides decoratus	Northeast Atlantic	1972
Nannolaimus guttatus	Northeast Atlantic	1920
Nannolaimus volutus	Northeast Atlantic	1956
Neotonchus chamberlaini	Northeast Atlantic	1966
Neotonchus corcundus	Northeast Atlantic
Neotonchus cupulatus	Northeast Atlantic	1970
Neotonchus filiformis	Northeast Atlantic	1971
Neotonchus interruptus	Northeast Atlantic	1971
Neotonchus meeki	Northeast Atlantic	1971
Neotonchus melotridus	Northeast Atlantic	1966
Neotonchus phaleratus	Northeast Atlantic	1966
Neotonchus pseudocorcundus	Northeast Atlantic	1971
Neotonchus punctatus	Northeast Atlantic	1933
Neotonchus vitius	Northeast Atlantic	1971
Paracanthonchus arcospiculum	Northeast Atlantic	1959
Paracanthonchus axonolaimoides	Northeast Atlantic
Paracanthonchus barka	Northeast Atlantic	1962
Paracanthonchus brachyuris	Northeast Atlantic	1951
Paracanthonchus caecus	Northeast Atlantic
Paracanthonchus cochlearis	Northeast Atlantic	1957
Paracanthonchus elongatus	Northeast Atlantic	1907
Paracanthonchus hawaiiensis	Northeast Atlantic	1951
Paracanthonchus longus	Northeast Atlantic	1934
Paracanthonchus major	Northeast Atlantic	1828
Paracanthonchus suecicus	Northeast Atlantic	1929
Paracanthonchus sunesoni	Northeast Atlantic	1942
Paracanthonchus tyrrhenicus	Northeast Atlantic	1949
Paracanthonchus uniformis	Northeast Atlantic	1950
Paracyatholaimoides labiosetosus	Northeast Atlantic	1966
Paracyatholaimoides multispiralis	Northeast Atlantic	1953
Paracyatholaimoides serpens	Northeast Atlantic	1957
Paracyatholaimus arcticus	Northeast Atlantic	1963
Paracyatholaimus chilensis	Northeast Atlantic	1953
Paracyatholaimus dubiosus	Northeast Atlantic	1874
Paracyatholaimus duplicatus	Northeast Atlantic	1964
Paracyatholaimus intermedius	Northeast Atlantic	1880
Paracyatholaimus oistospiculoides	Northeast Atlantic	1935
Paracyatholaimus paucipapillatus	Northeast Atlantic	1955
Paracyatholaimus pentodon	Northeast Atlantic	1966
Paracyatholaimus pesavis	Northeast Atlantic	1967
Paracyatholaimus proximus	Northeast Atlantic	1874
Paracyatholaimus rotundus	Northeast Atlantic	1964
Paracyatholaimus tenuispiculum	Northeast Atlantic	1951
Paracyatholaimus truncatus	Northeast Atlantic	1914
Paracyatholaimus vitraeus	Northeast Atlantic	1957
Paralongicyatholaimus mastigodes	Northeast Atlantic	1950
Parapomponema hastatum	Northeast Atlantic	1972
Parapomponema macrospirale	Northeast Atlantic	1972
Phyllolaimus dentatus	Northeast Atlantic	1959
Phyllolaimus tridentatus	Northeast Atlantic	1963
Pomponema litorium	Northeast Atlantic	1920
Pomponema mirabile	Northeast Atlantic	1917
Pomponema polydontus	Northeast Atlantic	1963
Pomponema segregatum	Northeast Atlantic	1959
Pomponema tautraense	Northeast Atlantic	1933
Praeacanthonchus cygnis	Northeast Atlantic	1970
Praeacanthonchus kreisi	Northeast Atlantic	1929
Praeacanthonchus punctatus	Northeast Atlantic	1865
Propomponema foeticolum	Northeast Atlantic	1972
Xyzzors fitzgeraldae	Northeast Atlantic	1963
Xyzzors inglisi	Northeast Atlantic	1967
Xyzzors iubatus	Northeast Atlantic	1972

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Species Identification: Find Species

Family: Cyatholaimidae (See list of species below)

Family: Cyatholaimidae

(See list of species below)