# Another World's Hell Creek

Author: harpier
Tags: Speculative, Speculative evolution, biology, evolution

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.

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.

Source: https://sofurry.com/s/lmXdzJ0m