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 1943.

Dinosaurs

Newly named dinosaurs

Data are courtesy of George Olshevky's dinosaur genera list.^[2]

Name	Status	Authors		Location	Notes	Images
Pachycephalosaurus[3]	Valid taxon	Barnum Brown	Schlaikjer	Canada ( Alberta)  USA ( Colorado,  Montana,  North Dakota,  South Dakota and  Wyoming)	A large pachycephalosaurid

Plesiosaurs

New taxa

Name Status Authors Location Images Alzadasaurus Valid Welles  USA ( Montana) Aphrosaurus Valid Welles  USA ( California) Fresnosaurus Valid Welles  USA ( California) Hydralmosaurus Synonym of Styxosaurus. Welles Hydrotherosaurus Valid Welles  USA ( California) Morenosaurus Valid Welles  USA ( California) Thalassomedon Valid Welles  USA ( Colorado and  Montana) Thalassonomosaurus Valid Welles

Synapsids

Non-mammalian

Name	Status	Authors	Age	Location	Notes	Images
Dinodontosaurus	Valid	Romer	237 millions of years ago	Argentina  Brazil	The Dicinodont with terrible teeth.
Exaeretodon	Valid	Cabrera	226 millions of years ago	Argentina  Brazil  India	This was a plant-eating Cynodont.
Theropsis	Valid