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 1933.

Name	Novelty	Status	Authors	Age	Unit	Location	Notes	Images
Electrostephanus brevicornis[4]	Sp nov	valid	Brues	Lutetian	Baltic Amber	Russia	A stephanid wasp
Electrostephanus petiolatus[4]	Sp nov	valid	Brues	Lutetian	Baltic Amber	Russia	A stephanid wasp, Electrostephanus type species
Electrostephanus tridentatus[4]	Sp nov	jr synonym	Brues	Lutetian	Baltic Amber		A stephanid wasp, now Denaeostephanus tridentatus

• Barnum Brown prospected the Two Medicine Formation, but found nothing significant.^[6]
• Lull published a monograph where he discusses AMNH 5244, a ceratopsian braincase.^[7]

Data courtesy of George Olshevsky's dinosaur genera list.^[8]

Name	Status	Authors		Age	Unit	Location	Notes	Images
Alectrosaurus[9]	Valid taxon	Charles W. Gilmore		late Campanian-early Maastrichtian	Iren Dabasu Formation	Mongolia	A tyrannosauroid.
Austrosaurus[10]	Valid taxon	Heber Albert Longman		late Albian-early Cenomanian	Allaru Formation	Australia	A titanosauriform.
Bactrosaurus[9]	Valid taxon	Charles W. Gilmore		late Campanian-early Maastrichtian	Iren Dabasu Formation	China	A hadrosauroid.
Coeluroides[11]	Nomen dubium	Friedrich von Huene	Charles Alfred Matley	late Maastrichtian	Lameta Formation	India	An Abelisaur.
Compsosuchus[11]	Nomen dubium	Friedrich von Huene	Charles Alfred Matley	late Maastrichtian	Lameta Formation	India	A noasaurid.
Dryptosauroides[11]	Nomen dubium	Friedrich von Huene	Charles Alfred Matley	late Maastrichtian	Lameta Formation	India	A noasaurid.
Indosaurus[11]	Valid taxon	Friedrich von Huene	Charles Alfred Matley	late Maastrichtian	Lameta Formation	India	An abelisaurid.
Indosuchus[11]	Valid taxon	Friedrich von Huene	Charles Alfred Matley	late Maastrichtian	Lameta Formation	India	An abelisaurid.
Jubbulpuria[11]	Nomen dubium	Friedrich von Huene	Charles Alfred Matley	late Maastrichtian	Lameta Formation	India	A noasaurid.
Laevisuchus[11]	Valid taxon	Friedrich von Huene	Charles Alfred Matley	late Maastrichtian	Lameta Formation	India	A noasaurid.
Mongolosaurus[12]	Nomen dubium	Charles W. Gilmore		Lower Cretaceous (Aptian-Albian)	On Gong Formation	China	A titanosaur.
Ornithomimoides[11]	Nomen dubium	Friedrich von Huene	Charles Alfred Matley	late Maastrichtian	Lameta Formation	India	A noasaurid.
Pinacosaurus[12]	Valid taxon	Charles W. Gilmore		middle-late Campanian	Djadochta Formation	China  Mongolia	An ankylosaurid.

• Makovicky, P. J., 2001, A Montanoceratops cerorhynchus (Dinosauria: Ceratopsia) braincase from the Horseshoe Canyon Formation of Alberta: In: Mesozoic Vertebrate Life, edited by Tanke, D. H., and Carpenter, K., Indiana University Press, pp. 243–262.
• Trexler, D., 2001, Two Medicine Formation, Montana: geology and fauna: In: Mesozoic Vertebrate Life, edited by Tanke, D. H., and Carpenter, K., Indiana University Press, pp. 298–309.