Miacis

Miacis hargeriMiacis igniculusMiacis sylvestrisMiacis' latouritype of proto-cat
Miacis is a genus of extinct carnivorous mammals that appeared in the late Paleocene and continued through the Eocene.wikipedia
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Carnivoramorpha

CarnivoraformescarnivoramorphsCarnivoramorph
Miacis is a genus of extinct carnivorous mammals that appeared in the late Paleocene and continued through the Eocene. The genus Miacis is not monophyletic but a diverse collection of species that belong to the stemgroup within the Carnivoramorpha.

Carnivora

carnivorescarnivorancarnivorans
As such, most Miacis species belong to the group of early carnivores that represent the ancestors of the modern order, the crown-group Carnivora. However, the species Miacis cognitus (now Gustafsonia) is placed not in the stem-group but among the Caniformia, one of the two suborders of the crown-group Carnivora.
The oldest caniforms are the Miacis species Miacis cognitus, the Amphicyonidae (bear-dogs) such as Daphoenus, and Hesperocyon (of the family Canidae, subfamily Hesperocyoninae).

Dormaalocyon

Dormaalocyon latouri
Dormaalocyon latouri (previously known as 'Miacis' latouri), was a species of carnivorous mammal that was active over fifty-six million years ago.

Gustafsonia

Miacis cognitusGustafsonia cognita
However, the species Miacis cognitus (now Gustafsonia) is placed not in the stem-group but among the Caniformia, one of the two suborders of the crown-group Carnivora.
The type species, Gustafsonia cognita, was described in 1986 by Eric Paul Gustafson, who originally interpreted it as a miacid and named it Miacis cognitus.

Angelarctocyon

Angelarctocyon australis
It was originally interpreted as a miacid and named Miacis australis, however recent research has suggested it is an early amphicyonid.

Genus

generageneric namegeneric
Miacis is a genus of extinct carnivorous mammals that appeared in the late Paleocene and continued through the Eocene.

Paleocene

PalaeoceneLate PaleocenePaleocene epoch
Miacis is a genus of extinct carnivorous mammals that appeared in the late Paleocene and continued through the Eocene.

Eocene

Late EoceneMiddle EoceneEocene Epoch
Miacis is a genus of extinct carnivorous mammals that appeared in the late Paleocene and continued through the Eocene.

Monophyly

monophyleticmonophyletic groupnon-monophyletic
The genus Miacis is not monophyletic but a diverse collection of species that belong to the stemgroup within the Carnivoramorpha.

Crown group

stem groupstemcrown
The genus Miacis is not monophyletic but a diverse collection of species that belong to the stemgroup within the Carnivoramorpha.

Caniformia

caniformcaniformsCanoidea
However, the species Miacis cognitus (now Gustafsonia) is placed not in the stem-group but among the Caniformia, one of the two suborders of the crown-group Carnivora.

Weasel

Mustelaweaselspolecat
Miacis species were five-clawed, about the size of a weasel (~30 cm), and lived on the North American and Eurasian continents.

Pelvis

pelvicpelvic girdlehip
The hind limbs were longer than the forelimbs, the pelvis was dog-like in form and structure, and some specialized traits were present in the vertebrae.

Binocular vision

binocularbinocular fusionbinocularity
It had retractable claws, agile joints for climbing, and binocular vision.

Creodonta

creodontcreodontscreodine
Miacis and related forms had brains that were relatively larger than those of the creodonts, and the larger brain size as compared with body size probably reflects an increase in intelligence.

Predation

predatorypredatorprey
Miacis was probably a very agile forest dweller that preyed upon smaller animals, such as small mammals, reptiles, and birds, and might have also have eaten eggs and fruits.

Mammal

mammalsMammaliamammalian
Miacis was probably a very agile forest dweller that preyed upon smaller animals, such as small mammals, reptiles, and birds, and might have also have eaten eggs and fruits.

Reptile

reptilesReptiliaSauropsida
Miacis was probably a very agile forest dweller that preyed upon smaller animals, such as small mammals, reptiles, and birds, and might have also have eaten eggs and fruits.

Bird

birdsAvesavian
Miacis was probably a very agile forest dweller that preyed upon smaller animals, such as small mammals, reptiles, and birds, and might have also have eaten eggs and fruits.

Edward Drinker Cope

CopeCope EDCope, E.D.
Since Edward Drinker Cope first described the genus Miacis in 1872, at least twenty other species have been assigned to Miacis.

Synapomorphy and apomorphy

derivedsynapomorphiessynapomorphy
However, these species share few synapomorphies other than plesiomorphic characteristics of Miacids in general.

Plesiomorphy and symplesiomorphy

plesiomorphicplesiomorphsymplesiomorphy
However, these species share few synapomorphies other than plesiomorphic characteristics of Miacids in general.