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Paleontology or palaeontology is the study of prehistoric life forms on Earth through the examination of plant and animal fossils.^[1] This includes the study of body fossils, tracks (ichnites), burrows, cast-off parts, fossilised feces (coprolites), palynomorphs and chemical residues. Because humans have encountered fossils for millennia, paleontology has a long history both before and after becoming formalized as a science. This article records significant discoveries and events related to paleontology that occurred or were published in the year 1890.

Plants

Angiosperms

Name	Novelty	Status	Authors	Age	Type locality	Location	Notes	Images
Carpolithes dentatus^[2]	Sp nov	jr synonym	Penhallow (in Dawson)^[3]	Eocene Ypresian	Okanagan Highlands "Stump lake", Coldwater Beds	Canada British Columbia	A small betulaceous fruit; moved to Palaeocarpinus dentatus in 2003
Comptonia columbiana^[3]	Sp nov	valid	Dawson	Eocene Ypresian	Okanagan Highlands Allenby Formation	Canada British Columbia	A Sweet fern	Comptonia columbiana

Pteridophyta

Name	Novelty	Status	Authors	Age	Type locality	Location	Notes	Images
Azollophyllum primaevum^[4]	Sp nov	jr synonym	Penhallow	Ypresian	Allenby Formation	Canada	moved to Azolla primaeva in 1955	Azolla primaeva

Arthropods

Insects

Name	Novelty	Status	Authors	Age	Type locality	Location	Notes	Images
Cymatomera maculata^[5]	Sp nov	Jr synonym	Scudder	Late Eocene	Florissant Formation	United States Colorado	A palaeorehniid ensiferan. Synonymized with Palaeorehnia maculata in 1908	Palaeorehnia maculata
Florissantia^[5]	gen et sp nov	Valid	Scudder	Late Eocene	Florissant Formation	United States Colorado	A dictyopharine planthopper. Type species F. elegans	Florissantia elegans

Archosauromorphs

Pseudosuchians

Name	Novelty	Status	Authors	Age	Type locality	Location	Notes	Images
Suchodus^[6]	Gen et sp nov	Valid	Lydekker	Middle Jurassic (Callovian)	Oxford Clay Formation	UK	A metriorhynchid thalattosuchian, type species S. durobrivensis	Suchodus brachyrhynchus

Dinosaurs

Name	Novelty	Status	Authors	Age	Type locality	Location	Notes	Images
Barosaurus	Gen et sp nov	Valid	Marsh	Kimmeridgian-Tithonian	Morrison Formation	United States South Dakota	A diplodocid, Type species B. lentus	Barosaurus lentus
Claosaurus	gen et comb nov	Nomen dubium	Marsh	Late Cretaceous (Coniacian-Santonian)	Niobrara Formation	United States Kansas	A hadrosaur. New comb for Hadrosaurus agilis Marsh 1872	Claosaurus agilis
Ornithomimus	Gen et sp nov	Valid	Marsh	Late Cretaceous (Lancian)	Denver Formation	United States Colorado	An ornithomimid. Type species O. velox	Ornithomimus edmontonicus

Sauropterygia

Nothosauroidea

Name	Novelty	Status	Authors	Age	Type locality	Location	Notes	Images
Anarosaurus	Gen et sp nov	Valid	Dames	Middle Triassic	Lower Muschelkalk	Germany	A pachypleurosaur. Type species B. pumilio	Anarosaurus heterodontus

References

^ Gini-Newman, Garfield; Graham, Elizabeth (2001). Echoes from the past: world history to the 16th century. Toronto: McGraw-Hill Ryerson Ltd. ISBN 9780070887398. OCLC 46769716.
^ Pigg, K.B.; Manchester S.R.; Wehr W.C. (2003). "Corylus, Carpinus, and Palaeocarpinus (Betulaceae) from the Middle Eocene Klondike Mountain and Allenby Formations of Northwestern North America". International Journal of Plant Sciences. 164 (5): 807–822. doi:10.1086/376816. S2CID 19802370.
^ ^a ^b Dawson, J. W. (1890). On fossil plants from the Similkameen Valley and other places in the southern interior of British Columbia. Royal Society of Canada.
^ Arnold, C.A. (1955). "A Tertiary Azolla from British Columbia" (PDF). Contributions from the Museum of. Paleontology, University of Michigan. 12 (4): 37–45.
^ ^a ^b Scudder, S. H. (1890). "The Tertiary insects of North America". United States Geological Survey of the Territories, Washington: 615.
^ Lydekker, R. 1890, Catalogue of the Fossil Reptilia and Amphibia in the British Museum (Natural History), Part IV. Containing the orders Anomodontia, Ecaudata, Caudata, and Labyrinthodonta, and Supplement, p. 1-295.