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Temporal range: Miocene, 20–8 Ma
Pseudaelurus jawbone from the Staatliches Museum für Naturkunde Stuttgart, Germany
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Suborder: Feliformia
Family: Felidae
Genus: Pseudaelurus
Gervais, 1850
Type species
Pseudaelurus quadridentatus
Blainville, 1843
  • P. cuspidatus Wang et al., 1998
  • P. guangheensis Cao et al., 1990
  • P. quadridentatus Blainville, 1843

Pseudaelurus is a prehistoric cat that lived in Europe, Asia and North America in the Miocene between approximately twenty and eight million years ago. It is considered to be a paraphyletic grade ancestral to living felines and pantherines as well as the extinct machairodonts (saber-tooths), and is a successor to Proailurus. It originated from Eurasia and was the first cat to reach North America, when it entered the continent at about 18.5 Ma ending a 'cat-gap' of 7 million years.[1][2] The slender proportions of the animal, together with its short, viverrid-like legs, suggest that it may have been an agile climber of trees.[3]

Species and distribution[edit]

Restoration of Pseudaelurus (in tree at upper right) and other animals of the Mascall assemblage

Pseudaelurus quadridentatus weighed about 30 kg (66 lb) and was approximately the size of a cougar.

Pseudaelurus guangheensis from the middle Miocene of Gansu (China) and Pseudaelurus cuspidatus from the middle Miocene of Xinjiang (China) are reported.[2]

Taxonomy and phylogeny[edit]

Pseudaelurus is located in Earth
Pseudaelurus from Big Beaver A (Ash Hollow), US
Pseudaelurus from Big Spring Canyon, US
Pseudaelurus intrepidus from Forked Hills of Hayden, US
Pseudaelurus from Fort Niobrara (Valentine), US
Pseudaelurus from Immense Journey Quarry, US
Pseudaelurus marshi from Joseph Jamber Quarry, US
Pseudaelurus stouti from Kennesaw (Pawnee Creek Beds), US
Pseudaelurus from Mastodon Quarry, US
Pseudaelurus marshi from Mouth of Minnechaduza Creek, US
Pseudaelurus intrepidus from Trail Creek Quarry (Ash Hollow), US
Pseudaelurus marshi from Valentine Railway Quarries (Valentine), US
Pseudaelurus intrepidus from Valentine Railway Quarries (Valentine), US
Pseudaelurus from Verdigre Quarry (Valentine), US
Pseudaelurus from Wolf Creek (SDSM V-5324), US
Pseudaelurus intrepidus from Rancho El Ocote (Basal) (Rancho Viejo Beds), MX
Pseudaelurus from Yepomera, MX
Pseudaelurus aeluroides from Yost Farm (Wood Mountain), CA
Pseudaelurus from Black Butte (UO 2343) (Juntura), US
Pseudaelurus from Cedar Mountain (Esmeralda), US
Pseudaelurus from Fish Lake Valley (Esmeralda), US
Pseudaelurus from Juniper Creek (UO 2451), US
Pseudaelurus from Red Basin (UO 2495) (Butte Creek Volcanic Sandstone), US
Pseudaelurus intrepidus from Tonopah, US
Pseudaelurus intrepidus from Avawatz Mountains (Avawatz), US
Pseudaelurus from Kent Quarry (DS Caliente), US
Pseudaelurus validus from Nambe (Tesuque), US
Pseudaelurus from Quatal Canyon South Side 3 (MR Caliente), US
Pseudaelurus from Wikieup (Big Sandy), US
Pseudaelurus from Adam Risley Ranch, US
Pseudaelurus from Screw Bean (Banta Shut-In), US
Pseudaelurus quadridentatus from Przeworno 1, Lower Silesia, PL
Pseudaelurus lorteti from Przeworno 2, Lower Silesia, PL
Pseudaelurus from Lufeng, Section D, Layer 2, CN
Pseudaelurus from Lufeng, Section D, Layer 3, CN
Pseudaelurus from Lufeng, Section D, Layer 4, CN
Pseudaelurus from Lufeng, Section D, Layer 5, CN
Pseudaelurus from Lufeng, Section D, Layer 6, CN
Pseudaelurus turnauensis from Al-Sarrar, Locality 8, Dam Formation (Dam), SA
Pseudaelurus from Panxian Dadong, CN
Pseudaelurus romieviensis from Langenau 1 (Brackwater Molasse), DE
Pseudaelurus from Bézian, FR
Pseudaelurus lorteti from Bézian, FR
Pseudaelurus romieviensis from Baigneaux-en-Beauce, FR
Pseudaelurus lorteti from Artenay, FR
Pseudaelurus from Zapfe's fissures, SK
Pseudaelurus lorteti from Sandberg, SK
Pseudaelurus turnauensis from Sandberg, SK
Pseudaelurus lorteti from Eggingen-Mittelhart 3 (Brackwater Molasse), DE
Pseudaelurus from Pellecahus, FR
Pseudaelurus quadridentatus from Pasalar, TR
Pseudaelurus from Pasalar, TR
Pseudaelurus lorteti from Antonios (Antonios), GR
Pseudaelurus quadridentatus from Antonios (Antonios), GR
Pseudaelurus from Isayevo, UA
Pseudaelurus aeluroides from Northeast Rim of Sinclair Draw (Olcott), US
Pseudaelurus from Ulaan Tologoi, UTO-A/5 (Loh), MN
Pseudaelurus intrepidus from Rhino Quarry (F:AM) (Sheep Creek), US
Pseudaelurus from Pellecahus, FR
Pseudaelurus intrepidus from Sharktooth Hill (terrestrial mammals) (Temblor), US
Pseudaelurus quadridentatus from Oggenhausen 2 (Upper Freshwater Molasse), DE
Pseudaelurus africanus from Rusinga Island, KE
Pseudaelurus africanus from Songhor (Main Site), KE
Pseudaelurus africanus from Karungu, KE
Pseudaelurus lorteti from Pontigne 3, FR
Pseudaelurus turnauensis from Pontigne 4 (marine), FR
Pseudaelurus lorteti from Pontigne 4 (marine), FR
Pseudaelurus from Grand-Trouve 4 (marine), FR
Pseudaelurus lorteti from Grand-Trouve 4 (marine), FR
Pseudaelurus romieviensis from Grand-Trouve 4 (marine), FR
Pseudaelurus marshi from UCMP V-99563 (Temblor), US
Pseudaelurus validus from Greenside Quarry (Sheep Creek), US
Pseudaelurus validus from Pliohippus Draw (Lower) (Sheep Creek), US
Pseudaelurus validus from Humbug Quarry (Olcott), US
Pseudaelurus validus from Far Surface Quarry (Olcott), US
Pseudaelurus validus from North Wall Quarry (Olcott), US
Pseudaelurus validus from Echo Quarry (Olcott), US
Pseudaelurus from Quatal Canyon South Side 14 (DSC Caliente), US
Pseudaelurus intrepidus from Sharktooth Hill (Temblor), US
Pseudaelurus from Princeton Loc. 1000C (Olcott), US
Pseudaelurus marshi from Observation Quarry, US
Pseudaelurus stouti from Observation Quarry, US
Pseudaelurus quadridentatus from En Pejouan, FR
Pseudaelurus quadridentatus from Malartic, a la ferme Larrieu, FR
Location of Pseudaelurus grade fossils based on Paleobiology Database.[4]

Traditionally all the Pseudaelurus-grade species from Europe, Asia, and North America have been assigned to a single genus, even though the paraphyletic nature of the group has often being noted. Several authorities have split Pseudaelurus into separate genera or subgenera, including Hyperailurictis, Styriofelis, Miopanthera and Schizailurus. These different groups of Pseudaelurus-grade felids are often considered to have given rise to later felid lineages.

The genus Styriofelis was originally proposed in 1929 by Kretzoi for the species Pseudaelurus turnaeunsis.[5] Kretzoi also proposed the genus Hyperailurictis for the North American species Pseudaelurus intrepidus,[6] and Miopanthera for Ps. lorteti.[7] In 1964, Beaumont elaborated on Kretzoi's proposal and split Pseudaelurus into three separate genera: Pseudaelurus for the European Ps. quadridentatus, Schizailurus for Ps. lorteti, and Hyperailurictis for Ps. intrepidus.[8]

Taxonomic history[edit]

In 1843, the paleontologist de Blainville published a description of a felid cranium and lower jaw fragment from Sansan, France. He assigned these fossils to a new species, Felis quadridentata. The cranium was later reassigned to another species, but in 1850 the lower jaw fragment was assigned to a new genus by Paul Gervais as Pseudaelurus quadridentatus, due to having certain primitive features.[9]

In 1858, Joseph Leidy described the species Felis intrepidus, from North America, and reassigned the species as Pseudaelurus intrepidus in 1869. After that discovery, another eight species of Pseudaelurus would be described in North America, but only five are still considered valid.[2]

In 1872, Henri Filhol described the species Pseudaelurus edwardsi from France, but the species was reassigned to the nimravid genus Eofelis in 2000.[10]

In 1882, a second species from Europe was described as Pseudaelurus turauensis, and a third species, Pseudaelurus lorteti, in 1899. The fourth European species, Pseudaelurus romieviensis, was described in 1934. In addition, the species Pseudaelurus transitorius was described in 1892, but most later authors considered it a synonym of P. turnaeunsis.[2]

In 1914, fossils from Africa were described and assigned to the species Pseudaelurus africanus. However, the species was later reassigned to first the genus Metailurus and finally to Afrosmilus.[11]

In Asia, the first description of Pseudaelurus was in 1910, when a fragmentary fossil was assigned to Pseudaelurus chinjiensis; however, it was reassigned in 1915 to the new genus Sivaelurus.[12] The next appearance of Pseudaelurus-grade felids in Asia wasn't until 1986, when a lower jaw fragment and some dental fragments were assigned to the species Pseudaelurus lorteti. In 1990, the species Pseudaelurus guangheensis was described.[13] In 1998, a second Asian species, Pseudaelurus cuspidatus, was also described.[14] Both of the Asian species are known only from fragmentary fossils.[2]

In 1998, while measuring fragmentary fossils from the Hsanda-Gol locality in Mongolia, Robert Hunt referred a lower jaw fragment to Proailurus sp.; while this was reassigned to the nimravid genus Eofelis in 1999 instead, a 2004 review of felid material from other localities in Mongolia suggested that it could belong to Pseudaelurus cuspidatus instead, on basis of having similar features. However, the Hsanda-Gol specimen is dated back to the Oligocene, while Pseudaelurus cuspidatus is found solely in Miocene-aged localities. The same paper also described a pair of fragments (a lower jaw fragment and a metapodial) and attributed them to Pseudaelurus sp.[12]

In 2010, a review of the Felidae as a whole suggested that Pseudaelurus be split into three genera: Hyperailurictis for the five North American species, Styriofelis for two of the European species (P. lorteti and P. turnaunensis), and Pseudaelurus sensu stricto for P. quadridentatus. The status of P. romieviensis, P. guangheensis, and P. cuspidatus was given as uncertain. In addition, Miopanthera and Schizailurus were recognized as junior synonyms of Styriofelis.[8]

In 2012, a new species Styriofelis vallesiensis was described based on a specimen found in Spain.[15] However, a review of the species in 2017 concluded that it was sufficiently different from other Styriofelis species as to require a separate genus. It was thus reassigned to the new genus Leptofelis as Leptofelis vallesiensis.[16]

In 2017, a review of the species Felis pamiri, which was named based on a snout fragment from Turkey and dated to the late Miocene, concluded that Felis pamiri and Pseudaelurus lorteti were likely closely related to each other, and ancestral to the Panthera lineage. Both species were reassigned to the genus Miopanthera as Miopanthera lorteti and Miopanthera pamiri.[17]


The following cladogram is based on Piras et al. (2013)[18] and illustrates the three more derived lineages that evolved from "Pseudaelurus" species.


Proailurus bourbonnensis

Proailurus lemanensis

Proailurus major

Pseudaelurus lineage

Pseudaelurus quadridentatus

Pseudaelurus cuspidatus

Pseudaelurus guangheensis

Machairodontinae Smilodon fatalis.jpg

Hyperailurictis lineage

Hyperailurictis intrepidus

Hyperailurictis marshi

Hyperailurictis stouti

Hyperailurictis validus

Hyperailurictis skinneri


Sivaelurus chinjiensis

Styriofelis lineage

Styriofelis turnauensis

Styriofelis romieviensis


Felinae Anatomie descriptive et comparative du chat (1845) Pl-I (white background & colourised).jpg


Miopanthera lorteti

Miopanthera pamiri

Pantherinae Stamp-russia2014-save-russian-cats-(snow leopard).png

sensu lato


  1. ^ Tedford, R. H.; Galusha, T.; Skinner, M. F.; Taylor, B. E.; Fields, R. W.; Macdonald, J. R.; Rensberger, J. M.; Webb, S. D.; Whistler, D.P. (1987). "Faunal succession and biochronology of the Arikareean through Hemphillian interval (late Oligocene through earliest Pliocene epochs) in North America". In Woodburne, M. O. (ed.). Cenozoic mammals of North America: Geochronology and biostratigraphy. Berkeley: University of California Press. pp. 153–210. ISBN 0-520-05392-3.
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  4. ^ "Pseudaelurus". The data were downloaded from the Paleobiology Database on June 27, 2017 using the taxon name 'Pseudaelurus'. Retrieved June 27, 2017.
  5. ^ Kretzoi, M. (1929a). "Feliden-Studien". A Magyar Királyi Földtani Intézet Hazinyomdaja. 24: 1–22.
  6. ^ Kretzoi, M. (1929b). "Materialien zur phylogenetischen Klassifikation der Aeluroideen". Int Cong Zool Budapest. 10: 1293–1355.
  7. ^ Kretzoi, M. (1938). "Die Raubtiere von Gombaszög nebst einer Übersicht der Gesamtfauna". Ann Mus Nat Hungar. 31: 88–157.
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