Colorado Critters

Front 1

Order? One set of upper and lower incisors and a large diastema.

Back 1

Order Rodentia

Front 2

Order? Two sets of upper incisors, one behind the other, and a large diastema.

Back 2

Order Lagomorpha

Front 3

Order? Enlarged, sharp canines and a carnassial pair.

Back 3

Order Carnivora

Front 4

Order? Antlers, horns, or pronghorns, selenodont cheek teeth, and no upper incisors.

Back 4

Order Artiodactyla

Front 5

Order? Lophodont cheek teeth and upper incisors.

Back 5

Order Perissodactyla

Front 6

Order? Enlarged canines and a narrow brain case.

Back 6

Order Didelphimorphia

Front 7

Order? Tiny skull with long, pointy rostrum. May or may not have zygomatic arch, may have brown tipped teeth.

Back 7

Order Soricomorpha

Front 8

Order? Tiny skull with large gap between front two teeth.

Back 8

Order Chiroptera

Front 9

Order? Skull, about 4" long, has a long, narrow rostrum and teeth that are homodont.

Back 9

Order Xenarthra

Front 10

Superorder? Antlers, horns, or pronghorns, selenodont cheek teeth, and no upper incisors.

Back 10

Superorder Paraxonia

Front 11

Superorder? Lophodont cheek teeth and upper incisors.

Back 11

Superorder Mesaxonia

Front 12

Infraclass? Enlarged canines and a narrow brain case.

Back 12

Infraclass Metatheria

Front 13

Infraclass? Two sets of upper incisors, one behind the other, and a large diastema.

Back 13

Infraclass Eutheria

Front 14

Infraclass? Skull, about 4" long, has a long, narrow rostrum and teeth that are homodont.

Back 14

Infraclass Eutheria

Front 15

Family? Enlarged canines and a narrow brain case.

Back 15

Family Didelphidae

Front 16

Family? Tiny skull with long, pointy rostrum. Does not have a zygomatic arch. May have brown tipped teeth.

Back 16

Family Soricidae

Front 17

Family? Tiny skull with long, pointy rostrum. Has a zygomatic arch.

Back 17

Family Talpidae

Front 18

Family? Skull, about 4" long, has a long, narrow rostrum and teeth that are homodont.

Back 18

Family Dasypodidae

Front 19

Family? Two sets of upper incisors, lots of skull fenestrations, six cheek teeth.

Back 19

Family Leporidae

Front 20

Family? Two sets of upper incisors, few skull fenestrations on lower jaw only, five cheek teeth, long extension on back of jugal bone.

Back 20

Family Ochotonidae

Front 21

Family? Single set of upper incisors, pointy post-orbital processes.

Back 21

Family Sciuridae

Front 22

Family? Single set of upper incisors, flat topped skull, first cheek tooth has a figure 8 shape to occlusal surface, MAY have grooved incisors.

Back 22

Family Geomyidae

Front 23

Family? Single set of upper incisors, large auditory bullae, infraorbital foramen goes all the way through nasal septum.

Back 23

Family Heteromyidae

Front 24

Family? Single set of upper incisors, keyhole shaped infraorbital foramen, 3 upper cheek teeth.

Back 24

Family Muridae

Front 25

Subfamily? Single set of upper incisors, keyhole shaped infraorbital foramen, round brain case, 3 rows tooth cusps.

Back 25

Subfamily Murinae

Front 26

Subfamily? Single set of upper incisors, keyhole shaped infraorbital foramen, round brain case, 2 rows tooth cusps OR prismatic teeth.

Back 26

Subfamily Sigmodontinae

Front 27

Subfamily? Single set of upper incisors, keyhole shaped infraorbital foramen, square brain case, prismatic teeth.

Back 27

Subfamily Arvicolinae

Front 28

Family? Single set of upper incisors, skull the size of a softball, small infraorbital foramen.

Back 28

Family Castoridae

Front 29

Family? Single set of upper incisors, skull the size of a softball, huge infraorbital foramen.

Back 29

Family Erethizontidae

Front 30

Family? Single set of upper incisors; enlarged, oval infraorbital foramen; 4 upper cheek teeth; grooved upper incisors.

Back 30

Family Zapodidae

Front 31

Suborder? Enlarged canines and a carnassial pair.

Back 31

Suborder Fissipedia

Front 32

Superfamily? Enlarged canines and a carnassial pair, not a cat.

Back 32

Superfamily Canoidea

Front 33

Superfamily? Enlarged canines and a carnassial pair, short rostrum, short brain case, divided auditory bullae, post-orbital process almost closes the circle around the orbit.

Back 33

Superfamily Feloidea

Front 34

Family? Enlarged canines and a carnassial pair, short rostrum, short brain case, divided auditory bullae, post-orbital process almost closes the circle around the orbit.

Back 34

Family Felidae

Front 35

Family? Enlarged canines and a carnassial pair, long rostrum, secodont teeth.

Back 35

Family Canidae

Front 36

Family? BIG skull, enlarged canines and a carnassial pair, bunodont cheek teeth.

Back 36

Family Ursidae

Front 37

Family? Enlarged canines and a carnassial pair, palate rounded and not even with last tooth.

Back 37

Family Mustelidae

Front 38

Family? Enlarged canines and a carnassial pair, often has bunodont cheek teeth, palate M shaped.

Back 38

Family Procyonidae

Front 39

Family? Enlarged canines and a carnassial pair, palate rounded and IS even with last tooth.

Back 39

Family Mephitidae

Front 40

Family? Lophodont cheek teeth and upper incisors.

Back 40

Family Equidae

Front 41

Suborder? Antlers, horns, or pronghorns, selenodont cheek teeth, and no upper incisors.

Back 41

Suborder Ruminantia

Front 42

Family? No upper incisors, selenodont cheek teeth, may have antlers.

Back 42

Family Cervidae

Front 43

Family? No upper incisors, small spikes of bone on head or pronghorns.

Back 43

Family Antilocapridae

Front 44

Family? No upper incisors, horns.

Back 44

Family Bovidae

Front 45

Family? Small bat with tail encased in patagium.

Back 45

Family Vespertilionidae

Front 46

Family? Small bat with tail free.

Back 46

Family Molossidae

Front 47

Suborder? Small bat, with or without tail free.

Back 47

Suborder Microchiroptera