Albalimulus Bicknell & Pates, 2019 † (verified source for family)
Allolimulus Lamsdell, 2020 † (habitat flag source)
Allolimulus Lamsdell, 2020 † (basis of record)
Allolimulus Lamsdell, 2020 † (verified source for family)
Allolimulus Lamsdell, 2020 † (extant flag source)
Allolimulus Lamsdell, 2020 † (name verified source)
Allolimulus Lamsdell, 2020 † (original description)
Allolimulus Lamsdell, 2020 † (current name source)
Andersoniella Lamsdell, 2020 † (original description)
Andersoniella Lamsdell, 2020 † (verified source for family)
Andersoniella Lamsdell, 2020 † (basis of record)
Andersoniella Lamsdell, 2020 † (name verified source)
Andersoniella Lamsdell, 2020 † (current name source)
Andersoniella Lamsdell, 2020 † (extant flag source)
Andersoniella Lamsdell, 2020 † (habitat flag source)
Archeolimulus Chlupáč, 1963 † (verified source for family)
Austrolimulidae Riek, 1968 † (current name source)
Austrolimulidae Riek, 1968 † (taxonomy source)
Austrolimulidae Riek, 1968 † (name verified source)
Austrolimulus Riek, 1955 † (verified source for family)
Austrolimulus Riek, 1955 † (current name source)
Batracholimulus Lamsdell, 2020 † (current name source)
Batracholimulus Lamsdell, 2020 † (extant flag source)
Batracholimulus Lamsdell, 2020 † (original description)
Batracholimulus Lamsdell, 2020 † (basis of record)
Batracholimulus Lamsdell, 2020 † (name verified source)
Batracholimulus Lamsdell, 2020 † (habitat flag source)
Batracholimulus Lamsdell, 2020 † (verified source for family)
Belinuridae Zittel in Zittel & Eastman, 1913 † (basis of record)
Bellinuroopsis Chernyshev, 1933 † (verified source for family)
Bellinuroopsis Chernyshev, 1933 † (current name source)
Boeotiaspis Lamsdell, 2020 † (habitat flag source)
Boeotiaspis Lamsdell, 2020 † (extant flag source)
Boeotiaspis Lamsdell, 2020 † (name verified source)
Boeotiaspis Lamsdell, 2020 † (basis of record)
Boeotiaspis Lamsdell, 2020 † (original description)
Boeotiaspis Lamsdell, 2020 † (verified source for family)
Boeotiaspis Lamsdell, 2020 † (current name source)
Carcinoscorpius Pocock, 1902 (verified source for family)
Casterolimulus Holland, Erickson & O'Brien, 1975 † (current name source)
Casterolimulus Holland, Erickson & O'Brien, 1975 † (verified source for family)
Crenatolimulus Feldmann, Schweitzer, Dattilo & Farlow, 2011 † (current name source)
Crenatolimulus Feldmann, Schweitzer, Dattilo & Farlow, 2011 † (verified source for family)
Drabovaspis Chlupáč, 1963 † (verified source for family)
Drabovaspis Chlupáč, 1963 † (current name source)
Dubbolimulus Pickett, 1984 † (current name source)
Dubbolimulus Pickett, 1984 † (verified source for family)
Elleria Raymond, 1944 † (verified source for family)
Elleria Raymond, 1944 † (status source)
Euproopidae Eller, 1938 † accepted as Belinuridae Zittel in Zittel & Eastman, 1913 † (name verified source)
Euproopidae Eller, 1938 † accepted as Belinuridae Zittel in Zittel & Eastman, 1913 † (source of synonymy)
Heterolimulidae Vía Boada & Villalta, 1966 † accepted as Limulidae Zittel, 1885 (source of synonymy)
Heterolimulus Vía Boada & de Villalta, 1966 † (current name source)
Heterolimulus Vía Boada & de Villalta, 1966 † (verified source for family)
Kasibelinuridae Pickett, 1993 † (taxonomy source)
Kasibelinuridae Pickett, 1993 † (current name source)
Kasibelinuridae Pickett, 1993 † (extant flag source)
Kasibelinuridae Pickett, 1993 † (habitat flag source)
Kasibelinuridae Pickett, 1993 † (basis of record)
Kasibelinuridae Pickett, 1993 † (name verified source)
Kasibelinurus Pickett, 1993 † (verified source for family)
Kasibelinurus Pickett, 1993 † (current name source)
Keuperlimulus Lamsdell, 2020 † (original description)
Keuperlimulus Lamsdell, 2020 † (name verified source)
Keuperlimulus Lamsdell, 2020 † (habitat flag source)
Keuperlimulus Lamsdell, 2020 † (current name source)
Keuperlimulus Lamsdell, 2020 † (extant flag source)
Keuperlimulus Lamsdell, 2020 † (basis of record)
Keuperlimulus Lamsdell, 2020 † (verified source for family)
Koenigiella Raymond, 1944 † (current name source)
Koenigiella Raymond, 1944 † (verified source for family)
Limulitella Størmer, 1952 † (verified source for family)
Limulitella Størmer, 1952 † (current name source)
Limulites Krueger, 1823 † accepted as Limulitella Størmer, 1952 † (source of synonymy)
Limulus O.F. Müller, 1785 (verified source for family)
Limulus O.F. Müller, 1785 (current name source)
Liomesaspidae Raymond, 1944 † accepted as Belinuridae Zittel in Zittel & Eastman, 1913 † (source of synonymy)
Lunataspis Rudkin, Young & Nowlan, 2008 † (taxonomy source)
Macrobelinurus Lamsdell, 2020 † (extant flag source)
Macrobelinurus Lamsdell, 2020 † (basis of record)
Macrobelinurus Lamsdell, 2020 † (original description)
Macrobelinurus Lamsdell, 2020 † (verified source for family)
Macrobelinurus Lamsdell, 2020 † (name verified source)
Macrobelinurus Lamsdell, 2020 † (current name source)
Macrobelinurus Lamsdell, 2020 † (habitat flag source)
Mesolimulus Størmer, 1952 † (current name source)
Mesolimulus Størmer, 1952 † (verified source for family)
Moravuridae Přibyl, 1967 † accepted as Paleolimulidae Raymond, 1944 † (name verified source)
Moravuridae Přibyl, 1967 † accepted as Paleolimulidae Raymond, 1944 † (source of synonymy)
Moravurus Přibyl, 1967 † (current name source)
Moravurus Přibyl, 1967 † (verified source for family)
Neobelinuropsis Eller, 1938 † accepted as Bellinuroopsis Chernyshev, 1933 † (source of synonymy)
Norilimulus Lamsdell, 2020 † (name verified source)
Norilimulus Lamsdell, 2020 † (habitat flag source)
Norilimulus Lamsdell, 2020 † (current name source)
Norilimulus Lamsdell, 2020 † (basis of record)
Norilimulus Lamsdell, 2020 † (original description)
Norilimulus Lamsdell, 2020 † (verified source for family)
Norilimulus Lamsdell, 2020 † (extant flag source)
Palatinaspis Malz & Poschmann, 1993 † accepted as Pringlia Raymond, 1944 † (source of synonymy)

 Taxonomic remark

 for Albalimulus Bicknell & Pates, 2019 †

From Lamsdell, 2020: ...traits of Albalimulus bottoni point towards its being a juvenile ... Albalimulus being such ... [details]

 Taxonomic remark

 for Elleria Raymond, 1944 †

Originally in Xiphosura. From Lamsdell, 2020: Elleria Raymond, 1944, comprising the single species Elleria morani ... [details]

 Taxonomic remark

 for Prestwichia Woodward, 1867 †

See -nella Woodward 1918. (Nomen. Zool.), however according to Lamsdell, 2020, Prestwichianella Cockerell, 1905 is ... [details]

 Taxonomic remark

 for Prestwichianella Cockerell, 1905 †

Nomen novum for Prestwichia Woodward, 1867, non Prestwichia Lubbock, 1863 (Hymenoptera). Nomen. Zool. gives this ... [details]

 Taxonomic remark

 for Sloveniolimulus Bicknell, Žalohar, Miklavc, Celarc, Križnar & Hitij, 2019 †

From Lamsdell, 2020: Sloveniolimulus is known from only a single, poorly preserved specimen displaying little more ... [details]

 Taxonomic remark

 for Xiphosura

Treated in IRMNG as a single order (Xiphosura) in class Merostomata, following Ruggiero et al., 2015. Other ... [details]

 Taxonomic remark

 for Xiphosuroides Shpinev & Vasilenko, 2018 †

From Lamsdell, 2020: Xiphosuroides is most likely a synonym of one of the other belinurine genera, however as it is ... [details]