2023 in arthropod paleontology

2023 in arthropod paleontology is a list of new arthropod fossil taxa, including arachnids, crustaceans, trilobites, and other arthropods (except insects, which have their own list) that were announced or described, as well as other significant arthropod paleontological discoveries and events which occurred in 2023.

List of years in arthropod paleontology
In paleontology
2020
2021
2022
2023
2024
2025
2026
In science
2020
2021
2022
2023
2024
2025
2026
In reptile paleontology
2020
2021
2022
2023
2024
2025
2026
In paleobotany
2020
2021
2022
2023
2024
2025
2026
In paleoentomology
2020
2021
2022
2023
2024
2025
2026
In paleomalacology
2020
2021
2022
2023
2024
2025
2026
In archosaur paleontology
2020
2021
2022
2023
2024
2025
2026
In mammal paleontology
2020
2021
2022
2023
2024
2025
2026
In paleoichthyology
2020
2021
2022
2023
2024
2025
2026

Chelicerates

Arachnids

Name Novelty Status Authors Age Type locality Country Notes Images

Archaeocroton kaufmani[1]

Sp. nov

Valid

Chitimia-Dobler, Mans & Dunlop in Chitimia-Dobler et al.

Cretaceous

Burmese amber

 Myanmar

A hard tick. Announced in 2022; the final article version was published in 2023.

Betaburmesebuthus fuscus[2]

Sp. nov

Valid

Xuan, Cai & Huang

Cretaceous

Burmese amber

 Myanmar

A scorpion belonging to the family Palaeoburmesebuthidae.

Betaburmesebuthus villosus[2]

Sp. nov

Valid

Xuan, Cai & Huang

Cretaceous

Burmese amber

 Myanmar

A scorpion belonging to the family Palaeoburmesebuthidae.

Bothriocroton muelleri[1]

Sp. nov

Valid

Chitimia-Dobler, Mans & Dunlop in Chitimia-Dobler et al.

Cretaceous

Burmese amber

 Myanmar

A hard tick. Announced in 2022; the final article version was published in 2023.

Eognosippus[3]

Gen. et sp. nov

Valid

Dunlop, Erdek & Bartel

Eocene (Lutetian)

Baltic amber

Europe (Baltic Sea region, possibly Kaliningrad Oblast, Russia)

A camel spider. The type species is E. fahrenheitiana.

Promacrothele[4]

Gen. et sp. nov

Tang, Engel & Yang in Tang et al.

Cretaceous

Burmese amber

 Myanmar

A spider belonging to the family Macrothelidae. The type species is P. polyacantha.

Unguicheylus[5]

Gen. et sp. nov

Valid

Khaustov, Vorontsov & Lindquist

Cretaceous (Albian–Cenomanian)

Taimyr amber

 Russia

A mite belonging to the new family Unguicheylidae, which might belong to the superfamily Anystoidea. The type species is U. quadriocellatus.

Uropodella hoffeinsorum[6]

Sp. nov

Valid

Lindquist & Vorontsov

Eocene

Baltic amber

Usedom

A mite, a species of Uropodella.

Arachnid research

  • A trigonotarbid arachnid specimen is described from the Carboniferous (Moscovian) Almazna Formation (Donetsk Oblast) by Dunlop & Dernov (2023), extending known distribution of trigonotarbids in Europe.[7]
  • A study on the anatomy and affinities of Geralinura brittanica and Proschizomus petrunkevitchi is published by Garwood & Dunlop (2023), who reinterpret P. petrunkevitchi as a whip scorpion rather than a stem-schizomid.[8]
  • The first known male specimen of Strotarchus paradoxus is described from the Miocene Mexican amber by García-Villafuerte & Ibarra-Núñez (2023).[9]

Eurypterids

Name Novelty Status Authors Age Type locality Country Notes Images

Archopterus[10]

Gen et sp. nov

Valid

Wang et al.

Ordovician

Wenchang Formation

 China

Likely the oldest representative of the family Adelophthalmidae. The type species is A. anjiensis.

Xiphosurans

Name Novelty Status Authors Age Type locality Country Notes Images

Xiphosuran research

  • Klompmaker et al. (2023) describe a specimen of Limulitella bronnii from the Anisian Muschelkalk sediments of the Vossenveld Formation (Netherlands), extending known temporal range of this species, and provide the diagnosis of L. bronnii for the first time.[11]

Other chelicerates

Name Novelty Status Authors Age Type locality Country Notes Images

Crustaceans

Malacostracans

Name Novelty Status Authors Age Type locality Country Notes Images

Bechleja brevirostris[12]

Sp. nov

Valid

De Mazancourt, Wappler & Wedmann

Eocene

Messel pit

 Germany

Possibly a member of the family Palaemonidae. Announced in 2022; the correction including evidence of registration in ZooBank was published in 2023.[13]

Chronocancer[14]

Gen. et sp. nov

Valid

Santana et al.

Early Cretaceous (Aptian-Albian)

Romualdo Formation

 Brazil

A crab, probably a member of the family Orithopsidae. The type species is C. camilosantanai. Announced in 2022 in an online-only journal, and the publication did not include a ZooBank registration number;[15] validated in 2023.

Cretacocalcinus fortis[16]

Sp. nov

Ferratges & Zamora in García-Penas et al.

Early Cretaceous

Maestrazgo Basin

 Spain

A hermit crab.

Cugocaris[17]

Gen. et sp. nov

Valid

Liu et al.

Silurian

Fentou Formation

 China

A member of Phyllocarida belonging to the group Archaeostraca. Genus includes new species C. future.

Dubiostenopus[18]

Gen. et sp. nov

Valid

Alencar et al.

Early Cretaceous (Aptian-Albian)

Romualdo Formation

 Brazil

A member of Stenopodidea of uncertain affinities. The type species is D. parvus.

Eobooralana[19]

Gen. et comb. nov

Schädel, Nagler & Hyžný

Middle Jurassic (Callovian)

 France

An isopod belonging to the group Scutocoxifera. The type species is "Urda" rhodanica Van Straelen (1928).

Eomunidopsis kinokunica[20]

Sp. nov

Valid

Karasawa, Ohara & Kato

Early Cretaceous (Barremian)

Arida Formation

 Japan

A member of the family Galatheidae. Announced in 2008 in an online-only journal, prior to electronic-only publications being allowed under ICZN; validated in 2023.[20]

Eryma nippon[20]

Sp. nov

Valid

Karasawa, Ohara & Kato

Early Cretaceous (Barremian)

Arida Formation

 Japan

Announced in 2008 in an online-only journal, prior to electronic-only publications being allowed under ICZN; validated in 2023.[20]

Gladiocaris[21]

Gen. et comb. nov

Valid

Garassino et al.

Middle Triassic

Trochitenkalk Formation

 Germany

A member of the family Penaeidae. Genus includes "Antrimpos" germanicus Brandt & Schulz (2013)

Glyphea pisuergae[22]

Sp. nov

Charbonnier, Garassino & López-Horgue

Early Jurassic (PliensbachianToarcian)

 Spain

Gonatocaris wuhanensis[17]

Sp. nov

Valid

Liu et al.

Silurian

Fentou Formation

 China

A member of Phyllocarida belonging to the group Archaeostraca.

Hepatus beurleni[23]

Nom. nov

Valid

Lima et al.

Miocene

Pirabas Formation

 Brazil

A species of Hepatus; a replacement name for Cyclocancer tuberculatus Beurlen (1958).

Hoploparia natsumiae[20]

Sp. nov

Valid

Karasawa, Ohara & Kato

Early Cretaceous (Barremian)

Arida Formation

 Japan

Announced in 2008 in an online-only journal, prior to electronic-only publications being allowed under ICZN; validated in 2023.[20]

Jaliscosphaera[24]

Gen. et sp. nov

García-Vázquez, Alvarado-Ortega & Vega

Pliocene

 Mexico

An isopod belonging to the family Sphaeromatidae. The type species is J. pliocenica.

Laeviprosopon ewakrzeminskae[25]

Sp. nov

Valid

Starzyk et al.

Late Jurassic (Tithonian)

Ernstbrunn Formation

 Austria

A crab belonging to the family Homolidae.

Laeviprosopon joecollinsi[25]

Sp. nov

Valid

Starzyk et al.

Late Jurassic (Oxfordian)

 Poland

A crab belonging to the family Homolidae.

Laeviprosopon lanceatum[25]

Sp. nov

Valid

Starzyk et al.

Late Jurassic (Oxfordian)

 Poland

A crab belonging to the family Homolidae.

Litorepagurus[26]

Gen. et sp. nov

Valid

Fraaije et al.

Early Cretaceous (Albian)

 France

A hermit crab. Genus includes new species L. wissantensis.

Miohepatus amazonicus[23]

Comb. nov

Valid

Lima et al.

Miocene

Pirabas Formation

 Brazil

A crab belonging to the family Aethridae. Moved from Hepatella amazonica Beurlen (1958). The type species of the new genus Miohepatus, which also includes extant species Miohepatus peruvianus (originally Hepatella peruviana Rathbun, 1933)

Oregonina[27]

Gen. et comb. nov

Valid

Nyborg, Garassino & Nyborg

Eocene

 United States
( Oregon
 Washington)

A crab belonging to the family Lyreididae. Genus includes "Macroacaena" leucosiae (Rathbun, 1932)

Ostenosculda[28]

Gen. et sp. nov

Valid

Braig et al.

Early Jurassic
(Sinemurian)

 Italy

A mantis shrimp belonging to the group Unipeltata. The type species is O. teruzzii.

Paguristes timoni[29]

Sp. nov

Valid

Wallaard et al.

Miocene
(Tortonian)

St. Marys Formation

 United States
( Maryland)

A hermit crab, a species of Paguristes.

Pagurus hazenorum[29]

Sp. nov

Valid

Wallaard et al.

Miocene
(Tortonian)

St. Marys Formation

 United States
( Maryland)

A hermit crab, a species of Pagurus.

Palaega yamadai[20]

Sp. nov

Valid

Karasawa, Ohara & Kato

Early Cretaceous (Barremian)

Arida Formation

 Japan

An isopod belonging to the family Cirolanidae. Announced in 2008 in an online-only journal, prior to electronic-only publications being allowed under ICZN; validated in 2023.[20]

Palaeodromites pimientai[16]

Sp. nov

Ferratges & Zamora in García-Penas et al.

Early Cretaceous

Maestrazgo Basin

 Spain

A crab.

Pseudoglyphea anisica[30]

Sp. nov

Valid

Pasini, Garassino & Charbonnier

Middle Triassic (Anisian)

 Italy

A litogastrid lobster.

Somalis[31]

Gen. et sp. nov

Valid

Barros & de Oliveira

Early Cretaceous (Aptian-Albian)

Romualdo Formation

 Brazil

A member of Penaeoidea. The type species is S. piauiensis.

Soomicaris ordosensis[32]

Sp. nov

Liu et al.

Ordovician

Lashizhong Formation

 China

A member of Phyllocarida belonging to the group Archaeostraca and the family Caryocarididae.

Tanaidaurum[33]

Gen. et sp. nov

Valid

Pazinato, Müller & Haug

Cretaceous

Burmese amber

 Myanmar

A member of Tanaidacea. The type species is T. kachinensis.

Triassosculda[34]

Gen. et sp. nov

Valid

Smith, Charbonnier, Fara & Brayard in Smith et al.

Early Triassic

Thaynes Group

 United States
( Idaho)

A mantis shrimp belonging to the group Unipeltata. The type species is T. ahyongi.

Trichopeltarion ryouheii[35]

Sp. nov

Valid

Kato in Kato et al.

Miocene

Kosho Formation

 Japan

A member of the family Trichopeltariidae.

Urda buechneri[19]

Sp. nov

Schädel, Nagler & Hyžný

Middle Jurassic (Bajocian)

 Germany

An isopod belonging to the group Scutocoxifera.

Urda stemmerbergensis[19]

Comb. nov

(Malzahn)

Early Cretaceous (Hauterivian)

 Germany

An isopod belonging to the group Scutocoxifera. Moved from "Palaega" stemmerbergensis Malzahn (1968).

Urda suevica[19]

Comb. nov

(Reiff)

Early Jurassic (Pliensbachian)

Amaltheenton Formation

 Germany

An isopod belonging to the group Scutocoxifera. Moved from "Palaega" suevica Reiff (1936).

Viapagurus[16]

Gen. et comb. nov

Ferratges & Zamora in García-Penas et al.

Early Cretaceous

Maestrazgo Basin

 Spain

A hermit crab. The type species is "Pagurus" avellanedai Vía (1951).

Xanthosia sakoi[20]

Sp. nov

Valid

Karasawa, Ohara & Kato

Early Cretaceous (Barremian)

Arida Formation

 Japan

A member of the family Etyidae. Announced in 2008 in an online-only journal, prior to electronic-only publications being allowed under ICZN; validated in 2023.[20]

Malacostracan research

Ostracods

Name Novelty Status Authors Age Type locality Country Notes Images

Acratia xinjiangensis[38]

Sp. nov

Luo et al.

Carboniferous (Pennsylvanian)

 China

Aechmina iwatensis[39]

Sp. nov

Valid

Tanaka

Carboniferous (Pennsylvanian)

Nagaiwa Formation

 Japan

Bairdia dukanensis[40]

Sp. nov

Valid

Hawramy, Al-Obidee & Aziz

Late Cretaceous

Shiranish Formation

 Iraq

A member of the family Bairdiidae.

Bairdoppilata shiranishensis[40]

Sp. nov

Valid

Hawramy, Al-Obidee & Aziz

Late Cretaceous

Shiranish Formation

 Iraq

A member of the family Bairdiidae.

Cutympanum[41]

Gen. et sp. nov

In press

Williams et al.

Silurian

Si Ka Formation

 Vietnam

A glossomorphitine hollinoidean ostracod. Genus includes new species C. hagiangensis.

Cyprideis qattaraensis[42]

Sp. nov

Shahin, El Khawagah & Shahin

 Egypt

Cytheropteron tesakovae[43]

Sp. nov

Karpuk

Early Cretaceous (Barremian–Aptian)

Crimea

A member of Podocopida belonging to the family Paradoxostomatidae. The specific name is shared with Cytheropteron tesakovae Kempf (2011).

Healdia ofunatensis[39]

Sp. nov

Valid

Tanaka

Carboniferous (Pennsylvanian)

Nagaiwa Formation

 Japan

Healdia rikutyuensis[39]

Sp. nov

Valid

Tanaka

Carboniferous (Pennsylvanian)

Nagaiwa Formation

 Japan

Healdianella shiqianensis[38]

Sp. nov

Luo et al.

Carboniferous (Pennsylvanian)

 China

Hornibrookella nudosa[40]

Sp. nov

Valid

Hawramy, Al-Obidee & Aziz

Late Cretaceous

Shiranish Formation

 Iraq

A member of the family Hemicytheridae.

Jordanites michinokuensis[39]

Sp. nov

Valid

Tanaka

Carboniferous (Pennsylvanian)

Nagaiwa Formation

 Japan

Liuzhinia phetchabunensis[44]

Sp. nov

Forel & Chitnarin

Permian

 Thailand

Microceratina andreui[45]

Sp. nov

Valid

Cabral & Lord in Danielopol et al.

Early and Middle Jurassic (Toarcian and Aalenian)

São Gião Formation

 Portugal

A member of the family Cytheruridae.

Monspopulus[41]

Gen. et sp. nov

In press

Williams et al.

Silurian

Si Ka Formation

 Vietnam

A sigmoopsine hollinoidean ostracod. Genus includes new species M. amicus.

Neomonoceratina farasensis[42]

Sp. nov

Shahin, El Khawagah & Shahin

 Egypt

Platyrhomboides japonica[39]

Sp. nov

Valid

Tanaka

Carboniferous (Pennsylvanian)

Nagaiwa Formation

 Japan

Platyrhomboides tohokuensis[39]

Sp. nov

Valid

Tanaka

Carboniferous (Pennsylvanian)

Nagaiwa Formation

 Japan

Pseudobythocypris asiatica[39]

Sp. nov

Valid

Tanaka

Carboniferous (Pennsylvanian)

Nagaiwa Formation

 Japan

Pseudobythocypris siveteri[39]

Sp. nov

Valid

Tanaka

Carboniferous (Pennsylvanian)

Nagaiwa Formation

 Japan

Pseudobythocypris zipangu[39]

Sp. nov

Valid

Tanaka

Carboniferous (Pennsylvanian)

Nagaiwa Formation

 Japan

Thuringobolbina ikeyai[39]

Sp. nov

Valid

Tanaka

Carboniferous (Pennsylvanian)

Nagaiwa Formation

 Japan

Thecostracans

Name Novelty Status Authors Age Type locality Country Notes Images

Other crustaceans

Name Novelty Status Authors Age Type locality Country Notes Images

Carapacestheria cangshanensis[46]

Sp. nov

In press

Li

Late Jurassic

Penglaizhen Formation

 China

A clam shrimp.

Insects

Megacheirians

Name Novelty Status Authors Age Type locality Country Notes Images

Radiodonts

Name Novelty Status Authors Age Type locality Country Notes Images

Guanshancaris[47]

Gen. et comb. nov

Zhang et al.

Cambrian Stage 4

Wulongqing Formation

 China

An amplectobeluid radiodont. The type species is "Anomalocaris" kunmingensis Wang, Huang & Hu (2013).

Trilobites

Name Novelty Status Authors Age Type locality Country Notes Images

Arisemolobes[48]

Gen. et sp. nov

Ingham & Fortey

Ordovician

 China

A member of Asaphida belonging to the group Cyclopygoidea and the family Ellipsotaphridae. Genus includes new species A. zhouzhiyii.

Bainella (Belenops) sulmatogrossensis[49]

Sp. nov

Kerber et al.

Devonian

 Brazil

Circulocrania ? dichaulax[48]

Sp. nov

Ingham & Fortey

Ordovician

Leishuia[50]

Gen. et sp. nov

In press

Peng et al.

Cambrian (Guzhangian)

Longha Formation

 China

A dameselloid trilobite. Genus includes new species L. leishuae.

Synaptotaphrus[48]

Gen. et sp. nov

Ingham & Fortey

Ordovician

 United Kingdom

A member of Asaphida belonging to the group Cyclopygoidea and the family Ellipsotaphridae. Genus includes new species S. oarion.

Trilobite research

  • A study on the timing of the appearance of trilobite planktic larvae is published Laibl, Saleh & Pérez-Peris (2023), who interpret their findings as indicating that Cambrian ecosystems were dominated by trilobites with exclusively benthic early post-embryonic stages, and that a progressive increase in the number of trilobite taxa that incorporated planktic stages in their development happened between the Miaolingian and the Middle Ordovician.[51]
  • Hou, Hughes & Hopkins (2023) report the presence of setae on the walking legs of the Cambrian Olenoides serratus and on the gill shaft of the Ordovician Triarthrus eatoni, and interpret these setae as likely used to groom the gills of the trilobites.[52]
  • Schoenemann & Clarkson (2023) describe specimens of Aulacopleura koninckii and Cyclopyge sibilla preserved with structures interpreted as likely median eyes, and interpret this finding as indicating that early developmental stages of trilobites possessed median eyes (probably unlike adult specimens).[53]
  • Gishlick & Fortey (2023) describe a specimen of Walliserops trifurcatus with a malformed cephalic trident showing four rather than three tines, and consider its anatomy to be consistent with the interpretation of the trident as a weapon used for intraspecific combat.[54]

Other arthropods

Name Novelty Status Authors Age Type locality Country Notes Images

Electroprojapyx[55]

Gen. et sp. nov

Valid

Sánchez-García et al.

Late Cretaceous (Cenomanian)

Burmese amber

 Myanmar

A member of Diplura belonging to the family Projapygidae. The type species is E. alchemicus.

Maldybulakia saierensis[56]

Sp. nov

Valid

Zong et al.

Silurian (Pridoli)

 China

Sidneyia minor[57]

Sp. nov

Valid

Du et al.

Cambrian Stage 3

 China

Symphylurinopsis[55]

Gen. et sp. nov

Valid

Sánchez-García et al.

Miocene

Dominican amber

 Dominican Republic

A member of Diplura belonging to the family Projapygidae. The type species is S. punctatus.

  • Redescription of Isoxys curvirostratus, incorporating data from new fossil material from the Cambrian Chiungchussu Formation (China) and focusing on the biramous appendages of this arthropod, is published by Zhang et al. (2023), who report that the appendage differentiation in Isoxys was higher than previously considered, that the trunk of I. curvirostratus was not arthrodized, and that Isoxys was one of the earliest branching members of Deuteropoda.[58]
  • New information on the anatomy of Concavicaris woodfordi, including the structure of the shield, the circulatory, digestive and reproductive systems, and the appendages, is presented by Laville et al. (2023).[59]
  • New information on the morphology of the Carboniferous millipedes Amynilyspes fatimae and Blanziulus parriati from the Montceau-les-Mines Lagerstätte (France) is presented by Lheritier et al. (2023).[60]

General research

References

  1. Chitimia-Dobler, L.; Dunlop, J. A.; Pfeffer, T.; Würzinger, F.; Handschuh, S.; Mans, B. (2022). "Hard ticks in Burmese amber with Australasian affinities". Parasitology. 150 (2): 157–171. doi:10.1017/S0031182022001585. PMC 10090639. PMID 36341553. S2CID 253382440.
  2. Xuan, Q.; Cai, C.Y.; Huang, D.Y. (2023). "Revision of palaeoburmesebuthid scorpions in mid-Cretaceous amber from northern Myanmar (Scorpiones: Buthoidea)". Palaeoentomology. 6 (1): 64–101. doi:10.11646/palaeoentomology.6.1.10. S2CID 257247707.
  3. Dunlop, J. A.; Erdek, M.; Bartel, C. (2023). "A new species of camel spider (Arachnida: Solifugae) in Baltic amber". Arachnology. 19 (4): 772–776. doi:10.13156/arac.2023.19.4.772. S2CID 257632799.
  4. Tang, Y.-N.; Peng, A.-C.; Wu, Z.-Y.; Engel, M. S.; Yang, Z.-Z.; Liu, Y. (2023). "Mygalomorph spiders in mid-Cretaceous Kachin amber (Araneae: Mygalomorphae), northern Myanmar: a new genus and species of the family Macrothelidae". Cretaceous Research. 147. 105514. doi:10.1016/j.cretres.2023.105514. S2CID 257306643.
  5. Khaustov, A. A.; Vorontsov, D. D.; Lindquist, E. E. (2023). "Unguicheylidae fam. nov., a new fossil family of prostigmatic mites (Acari: Prostigmata) from the Cretaceous Taimyr amber". Systematic and Applied Acarology. 28 (4): 766–776. doi:10.11158/saa.28.4.12.
  6. Lindquist, E. E.; Vorontsov, D. D. (2023). "Uropodella (Acari: Mesostigmata: Sejidae), mites unchanged from Eocene past to Holocene present". Acarologia. 63 (2): 346–355. doi:10.24349/y1ey-edzd. S2CID 257800454.
  7. Dunlop, J. A.; Dernov, V. S. (2023). "The first trigonotarbid arachnid from Ukraine". Acta Geologica Polonica. doi:10.24425/agp.2022.143600.
  8. Garwood, R. J.; Dunlop, J. A. (2023). "X-ray microtomography of the late Carboniferous whip scorpions (Arachnida, Thelyphonida) Geralinura britannica and Proschizomus petrunkevitchi". Journal of Systematic Palaeontology. 21 (1). 2180450. doi:10.1080/14772019.2023.2180450. S2CID 257976364.
  9. García-Villafuerte, M. Á.; Ibarra-Núñez, G. (2023). "The male of Strotarchus paradoxus (Petrunkevitch, 1963) (Araneae: Cheiracanthiidae), a fossil spider from Chiapas, Mexico". Acta Zoológica Mexicana. nueva serie. 39. e3912588. doi:10.21829/azm.2023.3912588.
  10. Wang, H.; Braddy, S. J.; Botting, J.; Zhang, Y. (2023). "The first documentation of an Ordovician eurypterid (Chelicerata) from China". Journal of Paleontology: 1–6. doi:10.1017/jpa.2023.21.
  11. Klompmaker, A. A.; van Eldijk, T. J. B.; Winkelhorst, H.; Reumer, J. W. F. (2023). "A non-marine horseshoe crab from the Middle Triassic (Anisian) of the Netherlands". Netherlands Journal of Geosciences. 102. e1. doi:10.1017/njg.2022.16. S2CID 255547401.
  12. de Mazancourt, V.; Wappler, T.; Wedmann, S. (2022). "Exceptional preservation of internal organs in a new fossil species of freshwater shrimp (Caridea: Palaemonoidea) from the Eocene of Messel (Germany)". Scientific Reports. 12 (1). 18114. doi:10.1038/s41598-022-23125-9. PMC 9613706. PMID 36302944.
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