Paraceraurus exsul is a species of trilobite that lived in St. Petersburg Region and Tver Region (in erratic blocks) of Russia, Estonia, Finland (Aland Island, in erratic blocks), Sweden, North Germany (in erratic blocks), Lithuania and Belarus during the Upper Llanvirnian Stage (463.5-460.9 Ma) [1] of the Middle Ordovician. These trilobites can reach a length of about 16 centimetres (6.3 in). They show a square front edge, large genal spines on the cheeks and characteristic long pygidial spines. Genal spines are curved usually inward and upward.
Trilobites of the families Cheiruridae and Encrinuridae from Estonia. Geoloogia Instituudi Uurimused (Trud Inst Geol Acad Sci Est SSR) Tallinn, 3 1958: 165–205, 210–212. [Zoological Record Volume 95]
V. Klikushin, A. Evdokimov, A. Pilipyuk. Ordovician Trilobites of the St. Petersburg Region, Russia. 2009.
paraceraurus, exsul, species, trilobite, that, lived, petersburg, region, tver, region, erratic, blocks, russia, estonia, finland, aland, island, erratic, blocks, sweden, north, germany, erratic, blocks, lithuania, belarus, during, upper, llanvirnian, stage, m. Paraceraurus exsul is a species of trilobite that lived in St Petersburg Region and Tver Region in erratic blocks of Russia Estonia Finland Aland Island in erratic blocks Sweden North Germany in erratic blocks Lithuania and Belarus during the Upper Llanvirnian Stage 463 5 460 9 Ma 1 of the Middle Ordovician These trilobites can reach a length of about 16 centimetres 6 3 in They show a square front edge large genal spines on the cheeks and characteristic long pygidial spines Genal spines are curved usually inward and upward Paraceraurus exsulTemporal range Middle OrdovicianParaceraurus exsulScientific classificationKingdom AnimaliaPhylum ArthropodaClass TrilobitaOrder PhacopidaSuborder CheirurinaFamily CheiruridaeGenus ParaceraurusSpecies P exsulBinomial nameParaceraurus exsul Beyrich 1846 SynonymsCheirurus exsul Beyrich 1846 Cheirurus exsul Schmidt 1881 Cheirurus exsul Beyr Schmidt 1907 Paraceraurus exsul Beyrich 1846 References Edit Fossilworks Trilobites of the families Cheiruridae and Encrinuridae from Estonia Geoloogia Instituudi Uurimused Trud Inst Geol Acad Sci Est SSR Tallinn 3 1958 165 205 210 212 Zoological Record Volume 95 V Klikushin A Evdokimov A Pilipyuk Ordovician Trilobites of the St Petersburg Region Russia 2009 External links EditPaleoart Fossil ID Paleontology portal This Phacopida related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Paraceraurus exsul amp oldid 1083375673, wikipedia, wiki, book, books, library,
