Information about Nimravid
| Nimravids (false sabre-tooths) | ||||||||||||
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) Hoplophoneus mentalis Hoplophoneus mentalis | ||||||||||||
| Conservation status | ||||||||||||
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Extinct (fossil) | ||||||||||||
| Scientific classification | ||||||||||||
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| Subfamilies | ||||||||||||
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The Nimravidae, sometimes known as False sabre-tooths, are an extinct family of mammalian carnivores. Although some Nimravids physically resembled the sabre-toothed cats of genus Smilodon, they were not closely related, but evolved a similar form through parallel evolution.
Previously classified as subfamily of Nimravidae, the barbourofelines have been recently assigned to their own distinct family Barbourofelidae (Morlo et al 2004).
The ancestors of the Nimravids and cats diverged from their common ancestor, from the Caniformia-Feliformia split, in the middle Eocene about 50 million years ago (mya), with a minimum constraint of 43 mya. Recognizable Nimravid fossils date from the late Eocene (37 mya), from the Chadronian White River Carnivora Formation at Flagstaff Rim, Wyoming, to the late Miocene (5 mya). Nimravid diversity appears to have peaked about 28 mya. Most had muscular, low-slung, catlike bodies, with shorter legs and tails than typical of cats.
The Nimravids are placed in tribes by some authors to reflect closer relationships in genera within the family. Some Nimravids did evolve into large toothed cats with massive flattened upper canines and accompanying mandibular flanges. Others had dentition similar to the Neofelids or modern cats with smaller canines. Others did have moderately increased canines in a more intermediate relationship between the saber-toothed cats and Neofelids. Not only were the upper canines shorter than the true saber-toothed cats but were more conical. These are referred to as being False sabre-tooths.
Not only did the Nimravids exhibit diverse dentition but also showed the same diversity in size and morphology as the Neofelids. Some were leopard sized, others the size of today's lions and tigers, and one with the short face, rounded skull and smaller canines as the modern cheetah.
Classification
- Family: Nimravidae
- Subfamily Nimravinae
- Genus: Dinictis
- Dinictis cyclops
- Dinictis felina
- Dinictis priseus
- Dinictis squalidens
- Genus: Dinaelurus
- Dinaelurus crassus
- Genus: Dinailurictis
- Dinailurictis bonali
- Genus: Eofelis
- Genus: Nimravides
- Nimravides pedionomus
- Genus: Nimravus
- Nimravus altidens
- Nimravus brachyops
- Nimravus edwardsi
- Nimravus gomphodus
- Nimravus intermedius
- Nimravus sectator
- Genus: Pogonodon
- Pogonodon davisi
- Pogonodon platycopis
- Genus: Quercylurus
- Quercylurus major
- Subfamily Hoplophoninae
- Genus: Eusmilis
- Eusmilis bidentatus
- Eusmilis cerebralis
- Eusmilis sicarius
- Genus: Hoplophoneus
The skull of Hoplophoneus mentalis, showing the sabre-like teeth - Hoplophoneus belli
- Hoplophoneus dakotensis
- Hoplophoneus occidentalis
- Hoplophoneus latidens
- Hoplophoneus mentalis
- Hoplophoneus primaevus
- Hoplophoneus robustus
)
References
MICHAEL MORLO, STÉPHANE PEIGNÉ and DORIS NAGEL A new species of Prosansanosmilus: implications for the systematic relationships of the family Barbourofelidae new rank (Carnivora, Mammalia) Zoological Journal of the Linnean SocietyVolume 140 Issue 1 Page 43 - January 2004 conservation status of a species is an indicator of the likelihood of that species continuing to survive either in the present day or the future. Many factors are taken into account when assessing the conservation status of a species: not simply the number remaining, but the
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- For other uses of the term, see Fossil (disambiguation)
FOSSIL is a standard for allowing serial communication for telecommunications programs under the DOS operating system.
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Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. Scientific classification also can be called scientific taxonomy, but should be distinguished from folk taxonomy, which lacks scientific basis.
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Chordata
Bateson, 1885
Typical Classes
See below
Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates.
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Bateson, 1885
Typical Classes
See below
Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates.
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Mammalia
Linnaeus, 1758
Subclasses & Infraclasses
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Linnaeus, 1758
Subclasses & Infraclasses
- Subclass †Allotheria*
- Subclass Prototheria
- Subclass Theria
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Carnivora
Bowdich, 1821
Families
The diverse order Carnivora (IPA: /kɑrˈnɪvərə/
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Bowdich, 1821
Families
- 17, See classification
The diverse order Carnivora (IPA: /kɑrˈnɪvərə/
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extinction is the cessation of existence of a species or group of taxa, reducing biodiversity. The moment of extinction is generally considered to be the death of the last individual of that species (although the capacity to breed and recover may have been lost before this point).
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family (Latin: familia, plural familiae) is a rank, or a taxon in that rank. Exact details of formal nomenclature depend on the Nomenclature Code which applies.
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Mammalia
Linnaeus, 1758
Subclasses & Infraclasses
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Linnaeus, 1758
Subclasses & Infraclasses
- Subclass †Allotheria*
- Subclass Prototheria
- Subclass Theria
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Carnivora
Bowdich, 1821
Families
The diverse order Carnivora (IPA: /kɑrˈnɪvərə/
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Bowdich, 1821
Families
- 17, See classification
The diverse order Carnivora (IPA: /kɑrˈnɪvərə/
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saber-toothed cat and saber-toothed tiger describe numerous species, mainly in the families Felidae (subfamily Machairodontinae), Hyaenodontidae, and Nimravidae, but also including two marsupial families, that lived during various parts of the Cenozoic and evolved their
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Smilodon
Lund, 1842
Species
Smilodon californicus
Smilodon fatalis
Smilodon gracilis
Smilodon populator
Smilodon floridus
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Lund, 1842
Species
Smilodon californicus
Smilodon fatalis
Smilodon gracilis
Smilodon populator
Smilodon floridus
- For the record label, see Smilodon Records
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Parallel evolution is the independent evolution of similar traits, starting from a similar ancestral condition due to similar environments or other evolutionary pressures[1].
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family (Latin: familia, plural familiae) is a rank, or a taxon in that rank. Exact details of formal nomenclature depend on the Nomenclature Code which applies.
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Barborofelidae
Previously placed as subfamily of Nimravidae, barbourofelinae has been recently assigned to its own distinct family Barbourofelidae, which is now thought to be taxonomically more closely related to Felidae than to Nimravidae.
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Previously placed as subfamily of Nimravidae, barbourofelinae has been recently assigned to its own distinct family Barbourofelidae, which is now thought to be taxonomically more closely related to Felidae than to Nimravidae.
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F. s. catus
Trinomial name
Felis silvestris catus
(Linnaeus, 1758)
Synonyms
Felis lybica invalid junior synonym
Felis catus invalid junior synonym[2]
The cat (
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Trinomial name
Felis silvestris catus
(Linnaeus, 1758)
Synonyms
Felis lybica invalid junior synonym
Felis catus invalid junior synonym[2]
The cat (
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Caniformia
Families and clades
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Families and clades
- Amphicyonidae (bear-dogs, extinct)
- Canidae (dogs and foxes)
- Mephitidae (skunks and stink badgers)
- Mustelidae (weasels, otters, badgers)
- Procyonidae (raccoons, coatimundis)
- Ursidae (bears)
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Feliformia
Kretzoi, 1945
Families
The Feliformia
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Kretzoi, 1945
Families
- †Barbourofelidae
- Eupleridae
- Felidae
- Herpestidae
- Hyaenidae
- Nandiniidae
- †Nimravidae
- Prionodontidae
- †Stenoplesictidae
- Viverridae
The Feliformia
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The Eocene epoch (55.8 ± 0.2 - 33.9 ± 0.1 Ma) is a major division of the geologic timescale and the second epoch of the Palaeogene period in the Cenozoic era. The Eocene spans the time from the end of the Paleocene epoch to the beginning of the Oligocene epoch.
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mya or "m.y.a." is an abbreviation for million years ago. This abbreviation is commonly used as a unit of time to denote length of time before the present or "B.P." (before AD 1950). Specifically, one mya is equal to 106 years ago.
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- For other uses of the term, see Fossil (disambiguation)
FOSSIL is a standard for allowing serial communication for telecommunications programs under the DOS operating system.
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Carnivora
Bowdich, 1821
Families
The diverse order Carnivora (IPA: /kɑrˈnɪvərə/
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Bowdich, 1821
Families
- 17, See classification
The diverse order Carnivora (IPA: /kɑrˈnɪvərə/
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The Miocene Epoch is a period of time that extends from about 23.03 to 5.332 million years before the present. As with other older geologic periods, the rock beds that define the start and end are well identified but the exact dates of the start and end of the period are uncertain.
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saber-toothed cat and saber-toothed tiger describe numerous species, mainly in the families Felidae (subfamily Machairodontinae), Hyaenodontidae, and Nimravidae, but also including two marsupial families, that lived during various parts of the Cenozoic and evolved their
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P. pardus
Binomial name
Panthera pardus
Linnaeus, 1758
The leopard (Panthera pardus
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Binomial name
Panthera pardus
Linnaeus, 1758
The leopard (Panthera pardus
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P. leo
Binomial name
Panthera leo
(Linnaeus, 1758)
Synonyms
Felis leo
(Linnaeus, 1758)
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Binomial name
Panthera leo
(Linnaeus, 1758)
Distribution of lions in Africa
Synonyms
(Linnaeus, 1758)
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P. tigris
Binomial name
Panthera tigris
(Linnaeus, 1758)
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Binomial name
Panthera tigris
(Linnaeus, 1758)
Historical distribution of tigers (pale yellow) and 2006 (green).
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Acinonyx
Brookes, 1828
Species: A. jubatus
Binomial name
Acinonyx jubatus
(Schreber, 1775)
Type species
Acinonyx venator
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Brookes, 1828
Species: A. jubatus
Binomial name
Acinonyx jubatus
(Schreber, 1775)
Type species
Acinonyx venator
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