nov Valid Wunderlich Late Cretaceous (Cenomanian) Burmese amber Myanmar A spider of uncertain affinities,[7] originally described as a member of the family Hexathelidae.
nov Valid Sidorchuk & Behan-Pelletier Late Cretaceous (Campanian) Canadian amber Canada A mite belonging to the group Oribatida and the family Megeremaeidae.
nov Valid Cai & Huang Late Cretaceous (Cenomanian) Burmese amber Myanmar A whip scorpion belonging to the family Thelyphonidae and the subfamily Thelyphoninae.
nov Valid Kornecki, Feldmann & Schweitzer Late Cretaceous (Maastrichtian) Coon Creek Formation United States A lyreidid raninoid crab.
nov Valid Schweitzer et al. Late Cretaceous (Turonian) Tres Hermanos Formation United States A crab belonging to the family Lyreididae.
nov Valid Audo Eocene (Ypresian) Ghazij Formation Pakistan A slipper lobster belonging to the subfamily Ibacinae, possibly a species of Ibacus.
nov Valid Garvie, Collins & Mellish Early Cretaceous (Albian) Upper Walnut Clay Formation United States A crab belonging to the group Raninoida and the superfamily Palaeocorystoidea.
nov Valid Kornecki, Feldmann & Schweitzer Late Cretaceous (Maastrichtian) Coon Creek Formation United States A spiny lobster, a species of Linuparus.
nov Valid Jell, Woods & Cook Early Cretaceous (late Aptian) Australia Charbonnier et al. (2021) transferred this species to the genus Meyeria.
nov Valid De Angeli & Caporiondo Eocene (Lutetian) Italy A hermit crab belonging to the family Diogenidae, a species of Paguristes.
nov Valid De Angeli & Caporiondo Eocene (Lutetian) Italy A hermit crab belonging to the family Paguridae, a species of Pagurus.
nov Valid De Angeli & Ceccon Eocene (Ypresian) Italy A crab belonging to the family Domeciidae; a replacement name for Tropicalia Beschin et al. (2016).
nov Valid De Angeli & Ceccon Eocene (Ypresian) Italy A crab belonging to the family Cancridae; a replacement name for Rama Beschin et al. (2016).
nov Valid Audo et al. Late Jurassic (Tithonian) Solnhofen Limestone Germany A member of Eryonoidea of uncertain phylogenetic placement; a new genus for "Eryon" oppeli Woodward (1866).
nov Valid Audo, Charbonnier & Krobicki Early Cretaceous (Valanginian) Czech Republic A member of the family Polychelidae; a new genus for "Eryon" neocomiensis Woodward (1881).
nov Valid Yasuhara, Hunt & Okahashi Late Quaternary Pacific Ocean (Shatsky Rise) A member of Podocopida belonging to the superfamily Cytheroidea and the family Cytheruridae.
nov Valid Yasuhara, Hunt & Okahashi Late Quaternary Pacific Ocean (Shatsky Rise) A member of Podocopida belonging to the superfamily Cytheroidea and the family Trachyleberididae.
nov Valid Yamaguchi, Matsui & Nishi Late Cretaceous (Maastrichtian) to early Eocene North Atlantic Ocean A member of the family Trachyleberididae.
nov Valid Yasuhara, Hunt & Okahashi Late Quaternary Pacific Ocean (Shatsky Rise) A member of Podocopida belonging to the superfamily Cytheroidea and the family Thaerocytheridae.
nov Valid Brandão Pleistocene Argentina A member of Podocopida belonging to the family Hemicytheridae; a replacement name for Cuvillierina Rossi de García (1972).
nov Valid Yamaguchi, Matsui & Nishi Paleocene (Danian and Selandian) Atlantic Ocean floor off the coast of Canada A member of the family Trachyleberididae.
nov Valid Stigall, Plotnick & Park Boush Early Oligocene Medicine Lodge Formation United States A clam shrimp belonging to the superfamily Estheriteoidea.
nov Valid Van Viersen, Holland & Koppka Devonian (late Emsian to Eifelian) El Otfal Formation Algeria Morocco A member of Phacopidae.
The type species is "Entomostracites" tauricornis Kutorga (1848); the subgenus also includes I. wahlenbergi (Eichwald, 1825), I. schuberti Nielsen (1995), I. dalmani Volborth (1863) and I. sarsi Jaanusson (1954).
nov Valid Loch & Ethington Ordovician (Whiterock Stage) Antelope Valley Limestone Ninemile Formation United States Iputaspis[131] Gen. et sp.
nov Valid Lamsdell & Briggs Late Silurian Phelps Member of the Fiddlers Green Formation (Bertie Group) United States Eozetetes[158] Gen. et sp.
nov Valid Edgecombe, Paterson & García-Bellido Early Cambrian Emu Bay Shale Australia A member of Euarthropoda of uncertain phylogenetic placement, might be related to aglaspidids or Emeraldella.
nov Valid Geyer & Peel Cambrian Ekspedition Bræ Formation Greenland A member of Agnostida (a group of arthropods of uncertain phylogenetic placement, possibly trilobites).
nov Valid Aria & Caron Cambrian Stage 5 Stephen Formation Canada A large bivalved arthropod belonging to the order Hymenocarina and the family Protocarididae.
nov Valid Lerner, Lucas & Lockley Early Triassic (Olenekian) Thaynes Group United States A xiphosuran belonging to the family Austrolimulidae.