1920 in paleontology

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Paleontology or palaeontology (from Greek: paleo, "ancient"; ontos, "being"; and logos, "knowledge") 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 1920.

Arthropods

Newly named insects

Name	Novelty	Status	Authors	Age	Unit	Location	Notes	Images
Emplastus emeryi[2]	Sp nov	Syn	Donisthorpe	Late Eocene	Bembridge Marls	England	A Dolichoderin ant jr synonym of Emplastus britannicus	Emplastus britannicus ("E. emeryi" holotype)
Dolichoderus gurnetensis[2]	Sp nov	Syn	Donisthorpe	Late Eocene	Bembridge Marls	England	A Dolichoderin ant jr synonym of Emplastus gurnetensis	E. gurnetensis queen

Archosauromorphs

Newly named dinosaurs

Data courtesy of George Olshevsky's dinosaur genera list.^[3]

Name	Status	Authors		Notes	Images
"Aristosaurus"[4]	Junior synonym.	van Hoepen		Junior synonym of Massospondylus.
"Dromicosaurus"[4]	Junior synonym.	van Hoepen		Junior synonym of Massospondylus.
Elaphrosaurus[5]	Valid taxon	Werner Janensch
Eucnemesaurus[4]	Valid taxon	van Hoepen
"Procheneosaurus"[6]	Junior synonym.	Matthew		Junior synonym of Lambeosaurus.

Synapsids

Non-mammalian

Name	Status	Authors	Discovery year	Age	Unit	Location	Notes	Images
Alopecopsis	Valid
Broomisaurus	Valid
Moschorhinus	Valid
Protacmon	Valid

References

1. 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.
2. Antropov AV, Belokobylskij SA, Compton SG, Dlussky GM, Khalaim AI, KolyadaVA, Kozlov MA, PerfilievaKS, Rasnitsyn AP (2014). "The wasps, bees and ants (Insecta: Vespida=Hymenoptera) from the Insect Limestone (Late Eocene) of the Isle of Wight, UK". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 104 (3-4): 335–446. doi:10.1017/S1755691014000103.
3. Olshevsky, George. "Dinogeorge's Dinosaur Genera List". Retrieved 2008-08-07.
4. Hoepen, E.C.N. van. 1920. Contributions to the knowledge of the reptiles of the Karro Formation. 5. A new dinosaur from the Stormberg Beds. 6. Further dinosaurian material in the Transvaal Museum. Ann. Transvaal. Mus. 7: pp. 77-141.
5. Janensch, W. 1920. Uber Elaphrosaurus bambergi und die Megalosaurier aus den Tendaguru-Schichten Deutsch-Ostafricas. Sitzungsberichte Gesellschaft Naturforschender Freunde Berlin 8: pp. 225-235.
6. Matthew, W.D. 1920. Canadian dinosaurs. Nat. Hist. 20: pp. 536-544.