PrirodaPrirodaПрирода0032-874XAkademizdatcenter Nauka62781010.7868/S0032874X23060042ArticlesСтатьиResearch ArticlePygocephalomorphs — Late Paleozoic “Shrimps” and “Crayfish”Пигоцефаломорфы — Необычные «Креветки» и «Раки» Позднего ПалеозояMychkoE. VМычкоЭ. Вeduard.mychko@gmail.comShirshov Institute of Oceanology, Russian Academy of SciencesИнститут Океанологии имени П.П.Ширшова РАНSevertsov Institute of Ecology and Evolution, Russian Academy of SciencesИнститут Проблем Экологии и Эволюции имени А.Н.Северцова РАНBorissiak Paleontological Institute, Russian Academy of SciencesПалеонтологический Институт имени А.А.Борисяка РАН300620236NO6 (2023)№6 (2023)415101032024Copyright ©; 2023, Издательство «Наука»2023Издательство «Наука»https://journals.eco-vector.com/0032-874X/article/view/627810

Pygocephalomorphs are ancient crustaceans that inhabited marine and fresh waters during the Late Paleozoic and disappeared during the Great Permian extinction. Despite the outward resemblance to lobsters and shrimps, pygocephalomorphs belong to the peracariids, a group that includes woodlice and amphipods. Therefore, they are one of the clearest examples of convergence among the diversity of arthropods. In the fossil record, the remains of these animals are quite rare, and each new discovery sheds light on the evolution and lifestyle of these mysterious crustaceans.

Пигоцефаломорфы — древние ракообразные, жившие в морских и пресных водоемах в позднем палеозое и исчезнувшие во время Великого пермского вымирания. Несмотря на внешнее сходство с омарами и креветками, пигоцефаломорфы относятся к перакаридам — группе, включающей мокриц и бокоплавов. Этот случай можно рассматривать как один из ярких примеров конвергенции среди членистоногих. В ископаемой летописи остатки таких животных довольно редки, и каждая новая находка проливает свет на эволюцию и образ жизни этих загадочных ракообразных.

paleontologyarthropodscrustaceansPygocephalomorphaпалеонтологиячленистоногиеракообразныепигоцефаломорфыМычко Э.В. Удивительные циклиды — свидетели Великого пермского вымирания: Ч.1. Природа. 2022; 9: 11–23; Ч.2. Природа. 2022; 10: 26–35.Prestwich J. On the geology of the Coalbrookdale. Transactions of the Geological Society of London. 1840; 5(2): 413–495.Salter J.W. On some of the Higher Crustacea from the British Coal-Measures. Journal of the Geological Society. 1861; 17: 528–533. DOI:10.1144/GSL.JGS.1861.017.01-02.44.Huxley T.H. Description of a new crustacean (Pygocephalus cooperi, Huxley) from the Coal Measures. Quarterly Journal of the Geological Society. 1857; 13: 363–369.Etheridge R. On the occurrence of the genus Dithyrocaris in the Lower Carboniferous, or Calciferous Sandstone Series of Scotland, and that of a second species of Anthrapalaemon in these beds. Quarterly Journal of the Geological Society. 1879; 35: 464–474.Etheridge R. On the occurrence of a macrurous decapod (Anthrapalaemon? woodwardi sp. nov.) in the Red Sandstone or lowest group of the Carboniferous formation in the southwest of Scotland. Quarterly Journal of the Geological Society. 1877; 33: 863–878.Peach B.N. On some new Crustacea from the Lower Carboniferous rocks of Eskdale and Liddesdale. Proceedings of the Royal Society of Edinburgh. 1882; 30: 73–91.Peach B.N. Further researches among the Crustacea and Arachnida of the Carboniferous rocks of the Scottish border. Transactions of the Royal Society of Edinburgh. 1883; 30: 511–529.Peach B.N. Monograph of the higher Crustacea of the Carboniferous rocks of Scotland. Memoirs of the Geological Survey of Great Britain: Palæontology. 1908; 1–82.Schram F.R., Koenemann S. Pygocephalomorpha. Evolution and Phylogeny of Pancrustacea. New York, 2022; 351–361. DOI:10.1093/oso/9780195365764.003.0027Beurlen K. Crustaceenreste aus den Mesosaurierschichten (Unterperm) von Brasilien (Sao Paulo). Palaeontologische Zeitschrift. 1931; 13: 35–50.Clarke J.M. New Paleozoic crustaceans: Crustaceans of the Permian Sao Paulo, Brazil. Bulletin of the New York State Museum. 1920; 219/220(15): 135–137.Woods H. Note on Pygocephalus from the Upper Dwyka Shales of Kimberley. Transactions of the Geological Society of South Africa. 1923; 25: 41–42.Beurlen K. Die Pygaspiden, eine neue Crustaceen- (Entomostracen-) Gruppe aus den Mesosaurier führenden Iraty-Schichten Brasiliens. Paläontologische Zeitschrift. 1934; 16: 122–138.Copeland M.J. The Arthropod fauna of the Upper Carboniferous rocks of the Maritime Province. Geological survey of Canada Memoir. 1957; 286: 1–110.Brooks H.K. The Paleozoic Eumalacostraca of North America. Bulletins of American Paleontology. 1962; 44: 163–338.Schram F.R. Mazon Creek caridoid Crustacea. Fieldiana, Geology. 1974; 30(2): 9–65.Schram F.R. Convergences between Late Paleozoic and modern caridoid Malacostraca. Systematic Zoology. 1974; 23: 323–332.Schram F.R. Jerometichenoria grandis n. gen. sp. (Crustacea: Mysidacea) from the Lower Permian of the Soviet Union. Journal of Paleontology. 1978; 52: 605–607.Schram F.R. British Carboniferous Malacostraca. Fieldiana, Geology. 1979; 40: 1–149.Schram F.R. Pygocephalus from the Upper Carboniferous of the Soviet Union. Journal of Paleontology. 1980; 54: 50–56.Schram F.R. Pseudotealliocaris palinscari n.sp., a pygocephalomorph from the Pocono Formation, Mississippian of Pennsylvania. Transactions of the San Diego Society of Natural History. 1988; 21: 221–225.Бирштейн Я.А. Подкласс Malacostraca. Основы палеонтологии: Членистоногие — трилобитообразные и ракообразные. М., 1960; 422–457.Lowry J.K., Dempsey K. The giant deep-sea scavenger genus Bathynomus (Crustacea, Isopoda, Cirolanidae) in the Indo-West Pacific. Résultats des Compagnes Musortom. V.24. Mémoires du Muséum National d’Histoire Naturalle. 2006; 193: 163–192.Рупперт Э.Э. Зоология беспозвоночных: Функциональные и эволюционные аспекты. Т.3: Членистоногие. М., 2008.Вестхайде В., Ригер Р. Зоология беспозвоночных в двух томах. Т.2: От артропод до иглокожих и хордовых. М., 2008.Wolfe J.M., Daley A.C., Legg D.A., Edgecombe G.D. Fossil calibrations for the arthropod Tree of Life. Earth-Science Reviews. 2016; 160: 43–110.Hegna T.A., Luque J., Wolfe J.M. The Fossil Record of the Pancrustacea. V.8: Evolution and Biogeography. Oxford, 2020; 21–52. DOI:10.1093/oso/9780190637842.003.0002.Jones W.T., Feldmann R.M., Schram F.R. et al. The proof is in the pouch: Tealliocaris is a peracarid. Palaeodiversity. 2016; 9: 75–88.Gueriau P., Charbonnier S., Clément G. First decapod crustaceans in a Late Devonian continental ecosystem. Palaeontology. 2014; 57: 1203–1213.Pazinato P.G., Bento Soares M., Adami-Rodrigues K. Systematic and paleoecological significance of the first record of Pygocephalomorpha females bearing oöstegites (Malacostraca, Peracarida) from the Lower Permian of southern Brazil. Palaeontology. 2016; 59: 817–826.Бирштейн Я.И. Заметки о палеозойских высших ракообразных (Malacostraca) СССР. Pygocephalomorpha. Палеонтологический журнал. 1966; 2: 49–56.Birshteyn Ya.A. Notes on Paleozoic Malacostraca of USSR. Pygocephalomorpha. International Geology Review, 1967; 9(4): 598–603. DOI:10.1080/00206816709474490.Резвый А.С., Ипполитов А.П., Снигиревский С.М., Борисенков К.В. Фауна из раннекаменноугольного лагерштетта на восточном склоне Северного Урала. Фундаментальная и прикладная палеонтология. Материалы LXIV сессии Палеонтологического общества при РАН (2–6 апреля 2018 г., Санкт-Петербург). СПб., 2018; 98–99.Pazinato P., Haug C., Leipner A., Haug J. Pygocephalomorphan crustaceans further emphasise the similarities between the Carboniferous Piesberg quarry in Germany and the Mazon Creek Lagerstätte in North America. Palaeontologia Electronica. 2022. DOI:10.26879/1051.Taylor R.S., Shen Y.-B., Schram F.R. New pygocephalomorph crustaceans from Permian of China and their phylogenetic relationships. Palaeontology. 1998; 41: 815–834.Irham M., Schram F.R., Vonk R. A new species of Pygocephalomorpha (Eumalacostraca: Peracarida) from the Leitchfield Formation, Lower Carboniferous (Mississippian) of Grayson County, Kentucky, USA. Studies on Malacostraca: Lipke Bijdeley Holthuis Memorial Volume. Leiden, 2010; 343–355.