113 genera are assigned to the class MEROSTOMATA
| Order | Genus | FOP | FOS | LOP | LOS |
|---|
| AGLASPIDA | Aglaspella | Cm | Fran | Cm | Trep-u |
| AGLASPIDA | Aglaspis | Cm | Fran | Cm | Trep-u |
| AGLASPIDA | Aglaspoides | Cm | Trep-u | Cm | Trep-u |
| AGLASPIDA | Angarocaris | O | Llde | O | Llde |
| AGLASPIDA | Beckwithia | Cm | uMid | Cm | Dres-l |
| AGLASPIDA | Borchgrevingkium | D | Emsi-l | D | Emsi-l |
| AGLASPIDA | Craspedops | Cm | Trep-u | Cm | Trep-u |
| AGLASPIDA | Cyclopites | Cm | Trep-u | Cm | Trep-u |
| AGLASPIDA | Flobertia | Cm | Trep-u | Cm | Trep-u |
| AGLASPIDA | Girardevia | O | Llde | O | Llde |
| AGLASPIDA | Glypharthrus | Cm | Fran | Cm | Trep-u |
| AGLASPIDA | Kodymirus | Cm | l | Cm | l |
| AGLASPIDA | Neostrabops | O | Ashg-l | O | Ashg-l |
| AGLASPIDA | Setaspis | Cm | Trep-u | Cm | Trep-u |
| AGLASPIDA | Sinaglaspis | P | Asse | P | Asse |
| AGLASPIDA | Strabops | Cm | Atda-l | Cm | Fran |
| AGLASPIDA | Triopus | O | Cara-l | O | Cara-l |
| AGLASPIDA | Tuboculops | Cm | Trep-u | Cm | Trep-u |
| AGLASPIDA | Uarthrus | Cm | Trep-u | Cm | Trep-u |
| CHASMATASPIDIDA | Chasmataspis | O | Llvi | O | Llvi |
| CHASMATASPIDIDA | Diploaspis | D | Emsi-l | D | Emsi-l |
| CHASMATASPIDIDA | Heteroaspis | D | Emsi-l | D | Emsi-l |
| EURYPTERIDA | Acutiramus | S | Prid | D | Gedi |
| EURYPTERIDA | Adelophthalmus | D | Fame | P | Leon |
| EURYPTERIDA | Alkenopterus | D | Emsi-l | D | Emsi-l |
| EURYPTERIDA | Baltoeurypterus | S | Wenl | S | Prid |
| EURYPTERIDA | Bassipterus | S | Prid | S | Prid |
| EURYPTERIDA | Brachopterella | S | Prid | S | Prid |
| EURYPTERIDA | Brachyopterus | O | Cara-l | O | Cara-l |
| EURYPTERIDA | Buffalopterus | S | Prid | S | Prid |
| EURYPTERIDA | Campylocephalus | C | Serp | C | Serp |
| EURYPTERIDA | Carcinosoma | S | Ludl | D | Emsi-l |
| EURYPTERIDA | Clarkeipterus | S | Prid | S | Prid |
| EURYPTERIDA | Ctenopterus | S | Wenl | S | Wenl |
| EURYPTERIDA | Dolichopterus | S | Wenl | D | Sieg-l |
| EURYPTERIDA | Dorfopterus | D | Sieg-u | D | Emsi-l |
| EURYPTERIDA | Drepanopterus | S | Ldov | D | Emsi-l |
| EURYPTERIDA | Dunsopterus | C | Vise | C | Serp |
| EURYPTERIDA | Echinognathus | O | Cara-m | O | Ashg |
| EURYPTERIDA | Eocarcinosoma | O | Ashg | O | Ashg |
| EURYPTERIDA | Erettopterus | S | Ldov | D | Sieg |
| EURYPTERIDA | Erieopterus | S | Wenl | D | Sieg-u |
| EURYPTERIDA | Eurypterus | S | Ldov | D | Emsi-l |
| EURYPTERIDA | Grossopterus | D | Sieg-u | D | Sieg-u |
| EURYPTERIDA | Hallipterus | D | Fras | D | Fras |
| EURYPTERIDA | Hardieopterus | S | Ldov-m | S | Prid |
| EURYPTERIDA | Hastimima | P | Sakm | P | Sakm |
| EURYPTERIDA | Hibbertopterus | C | Vise | C | Serp |
| EURYPTERIDA | Holmipterus | S | Wenl | S | Wenl |
| EURYPTERIDA | Hughmilleria | S | Ludl | S | Ludl |
| EURYPTERIDA | Jaekelopterus | D | Sieg-l | D | Emsi-l |
| EURYPTERIDA | Kiaeropterus | S | Ldov | S | Ludl |
| EURYPTERIDA | Kokomopterus | S | Prid | S | Prid |
| EURYPTERIDA | Lamontopterus | S | Ldov-u | S | Ldov-u |
| EURYPTERIDA | Lanarkopterus | S | Wenl-u | S | Ludl-l |
| EURYPTERIDA | Laurieopterus | S | Ldov-u | S | Ldov-u |
| EURYPTERIDA | Megalograptus | O | Cara | O | Ashg-m |
| EURYPTERIDA | Mixopterus | S | Wenl | S | Prid |
| EURYPTERIDA | Moselopterus | D | Emsi-l | D | Eife |
| EURYPTERIDA | Nanahughmilleria | S | Ludl | D | Gedi |
| EURYPTERIDA | Onychopterella | S | Prid | S | Prid |
| EURYPTERIDA | Pagea | D | Gedi-u | D | Gedi-u |
| EURYPTERIDA | Paracarcinosoma | S | Wenl | D | Gedi-u |
| EURYPTERIDA | Parahughmillera | S | Ldov-m | D | Emsi |
| EURYPTERIDA | Parastylonurus | S | Prid | S | Prid |
| EURYPTERIDA | Pittsfordipterus | S | Prid | S | Prid |
| EURYPTERIDA | Pterygotus | S | Ludl | D | Fame-m |
| EURYPTERIDA | Rhenopterus | D | Sieg-u | D | Fras-u |
| EURYPTERIDA | Rhinocarcinosoma | S | Ludl-u | S | Ludl-u |
| EURYPTERIDA | Ruedemannipterus | O | Cara | S | Wenl |
| EURYPTERIDA | Salteropterus | S | Prid | S | Prid |
| EURYPTERIDA | Slimonia | S | Ldov-u | S | Prid |
| EURYPTERIDA | Strobilopterus | D | Sieg-u | D | Sieg-u |
| EURYPTERIDA | Stylonurella | S | Ldov | S | Ldov |
| EURYPTERIDA | Stylonuroides | S | Ludl | S | Ludl |
| EURYPTERIDA | Stylonurus | D | Gedi | D | Gedi |
| EURYPTERIDA | Syntomopterus | D | Sieg-l | D | Sieg-l |
| EURYPTERIDA | Tarsopterella | S | Prid | D | Gedi-u |
| EURYPTERIDA | Truncatiramus | S | Wenl | S | Prid |
| EURYPTERIDA | Tylopterella | S | Ludl | S | Ludl |
| EURYPTERIDA | Waeringopterus | S | Prid | D | Gedi |
| EURYPTERIDA | Willwerathia | D | Emsi-l | D | Emsi-l |
| INCERTAE SEDIS | Eolimulus | Cm | Atda | Cm | Atda |
| INCERTAE SEDIS | Gdowia | Cm | Tomm-u | Cm | Tomm-u |
| INCERTAE SEDIS | Sanctacarus | Cm | mMid-l | Cm | mMid-l |
| XIPHOSURIDA | Archeolimulus | O | m | O | m |
| XIPHOSURIDA | Bellinuroopsis | D | Fame-u | D | Fame-u |
| XIPHOSURIDA | Bellinurus | D | Eife | C | Mosc-l |
| XIPHOSURIDA | Bembicosoma | S | u | S | u |
| XIPHOSURIDA | Bunaia | S | Prid | S | Prid |
| XIPHOSURIDA | Bunodella | S | u | S | u |
| XIPHOSURIDA | Bunodes | S | Ludl-l | S | Ludl-l |
| XIPHOSURIDA | Casterolimulus | K | Maes-l | K | Maes-l |
| XIPHOSURIDA | Cyamocephalus | S | Ldov-u | S | Ludl |
| XIPHOSURIDA | Elleria | D | Fras | D | Fras |
| XIPHOSURIDA | Heterolimulus | Tr | Ladi | Tr | Ladi |
| XIPHOSURIDA | incertae sedis | S | Ldov-u | S | Ldov-u |
| XIPHOSURIDA | Legrandella | D | Emsi-l | D | Emsi-l |
| XIPHOSURIDA | Limulitella | Tr | Ladi | J | Hett |
| XIPHOSURIDA | Limuloides | S | Ludl-u | S | Ludl-u |
| XIPHOSURIDA | Limulus | Tr | m | R | |
| XIPHOSURIDA | Mesolimulus | J | Tith-l | K | Ceno |
| XIPHOSURIDA | Moravurus | C | Serp-l | C | Serp-l |
| XIPHOSURIDA | Neobelinuropsis | D | Fras | D | Fras |
| XIPHOSURIDA | Neolimulus | S | Ludl | S | Ludl |
| XIPHOSURIDA | Paleolimulus | D | Fame | P | Sakm |
| XIPHOSURIDA | Pasternakevia | S | Ludl-u | S | Ludl-u |
| XIPHOSURIDA | Psammonlimulus | Tr | Olen-u | Tr | Olen-u |
| XIPHOSURIDA | Pseudoniscus | S | Prid | S | Prid |
| XIPHOSURIDA | Rolfeia | C | Tour-u | C | Tour-u |
| XIPHOSURIDA | Tachypleus | T | Mi | R | |
| XIPHOSURIDA | Victalimulus | K | Albi | K | Albi |
| XIPHOSURIDA | Weinbergina | D | Emsi-l | D | Emsi-l |
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FOP = Period of first occurrence
FOS = Stage of first occurrence
LOP = Period of last occurrence
LOS = Stage of last occurrence
Stage abbreviations follow Sepkoski (2002).