Mammals

Tyrannotherium rex: A twelve meter long, 15 ton heavy gobiconodontid.

Napioa piadaph: A grizzly sized gobiconodontid.

Napioa leonina A polar bear sized gobiconodontid.

Circavelocipterus major: A 2 meter wingspanned volaticothere.

Dreschepteryx blackfooti: A 1.2 wingspanned volaticothere.

"Unamed Volaticothere A": A 1.5 wingspanned volaticothere.

"Unamed Volaticothere B": A single volaticothere molar, possibly from an animal with a 30 centimeter wingspan.

"Unamed Volaticothere C": A miniscule skull that represents the smallest mammal remain, an animal with a wingspan of 2 centimeters.

"Unamed Volaticothere D": A single skull that might belong to an animal with a 20 centimeter wingspan.

Iinii na: A thirteen meter long, 17 ton heavy taeniolabidoid multituberculate with arsinothere-like horns.

Iinii poos: A 9 meter long, 9 ton heavy multituberculate with additional backwards-facing horns.

Iinii minor: A white rhino sized multituberculate. Proportionally largest horns.

Iinii impotens: A cow sized multituberculate with the proportionally smallest horns.

Mainyutherium torpor: A lion-sized ptilodontoidean multituberculate.

Macropobaatar americanum: A hopping, red kangaroo sized djachtheroidean multituberculate.

Other multituberculate taxa similar to our Hell Creek

Toxoamericana prudens: A rhino sized gondwanathere.

Pterofossor antiquum: A sheep sized haramiyidan seemingly adapted to a gliding lifestyle, but found in several burrow remains.

Enigmatotherium bardelotii: A polar bear sized shuotheriid.

Anserotherium pilosa: A cow sized taeniodont with sloth-like claws.

Girafapilosa elegans: A gracile camel-like taeniodont.

Schowalteria major: A sheep sized taeniodont.

"Unamed taeniodont": A rat sized taeniodont.

Other cimolestids similar to ours.

Plesiornythorhynchus creeki: A freshwater marine monotreme.

Didelphomachairus burni: A cougar sized deltatheroidean with saber teeth.

Arborodelta horribilis: An arboreal deltatheroidean.

Nanocuris improvida: A wolverine sized deltatheroidean.

Gallopia spp.: A genus of hopping alphadonts, similar to hares and kangaroos, ranging from the size of a pika to that of a red kangaroo. At least 5 species are recognised.

Didelphodon mordax: A giant otter sized stagodontid, with some speciations towards terrestriality and bone crushing.

Other metatherians as in our Hell Creek.

Xenolycaeon pelopsi: A wolf sized zalambdalestid.

Pawpatrollia deinotops: A fox sized zalambdalestid.

Agathocircus titan: A Paraceratherium sized zhelestid.

Cheniaotia nashi: A camel sized zhelestid.

Hippoceron monodactylus: A horse sized zhelestid.

Several indeterminate zhelestids, ranging from rabbit to giraffe size.

Choerocheirus nasalis: A pig-sized protoungulatid.

Other eutherians in in our world.


Crocodylomorphs

Ankylosimus robusta: An ankylosaur like notosuchian.

Ceratochampsus behemothi: A rhino sized notosuchian with horns.

Suicaiman major: A three meter long notosuchian with long lower fangs.

Suicaiman meridionalis: A 2.4 meter long notosuchian, smaller fangs than its relative.

Diplomimus longicaudis: A 22 meter long, 22 ton heavy notosuchian with a long neck and tail.

"Unnamed goniopholids": Three goniopholid species occupying ecological niches talen by crown-group crocodilians in our Hell Creek.


Pterosaurs

Navajodactylus northropi: A thirteen meter wingspanned lonchodectid.

Navajodactylus agrens: A six meter wingspanned lonchodectid.

Euphobetor macronyx: A four meter wingspanned dsungaripterid.

Phoenicodraco fulgens: A four meter wingspanned, filter-feeding targaryendraconid.

Saurofalco fatalis: A 2.4 meter wingspanned omnivorous eudimorphodontid.

Saurosteatornis americana: A 1.7 meter wingspanned herbivorous eudimorphodontid.

Euleptodactylus crumenifer: A 3.5 meter wingspanned istiodactylid.

Possible anurognathids.

Birds

Aepygallus spp.: Five species of lectavid enantiornitheans reaching heights from 1.5 to 3 meters. Adults flightless, but juveniles still capable of powered flight.

Avisaurus major: A 3 meter wingspanned enantiornithean.

Other taxa as in our world.

Amphibians

Mamii na: A 2.5 meter long trematosaurid.

Mymercopeton giganteus: A meter long, anteater-like albanerpetontid.

Other taxa as in our Hell Creek.