Organism · Placental mammals
Proailurus lemanensis
Source time context (not species duration) · ≈ 27–20 Ma
Inferred life reconstruction
Proailurus lemanensis
Overview
Proailurus lemanensis is a fossil animal revealing early cat-like forms. Skull and jaw fragments provide evidence of teeth and facial structure. Similarities to living cats can be considered alongside differences.[2][3]
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Key facts
SG3509a–e comprises several skull and jaw fragments from one individual. The rear skull, left and right upper jaws, and lower jaw are preserved separately and studied together. Five labels do not mean fossils of five animals.[2]
Time and place
Occurrence layers in the fossil database are summarized as approximately 27–20 million years old, spanning the Oligocene to Miocene. Research comparing early felids examines skull and jaw features. Modern cat bodies can be considered alongside ancient relatives.[4][2]
The time range describes source context, not the complete duration of this species.
Size, form and skeleton
An expert synthesis presents a broadly cat-like body plan with differences in teeth and limb proportions. Shoulder height is roughly described as about 38 cm. Direct skull and jaw evidence and an expert synthesis of the whole body convey different information.[2][3]
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Habitat and reproduction
Partly arboreal life has been proposed from the feet and ankles. This is a tentative interpretation in an expert synthesis. Beyond a cat-like outline, limb structures raise questions about what ways of life they enabled.[3]
Fossil discovery
Museum type-specimen records and a 1999 comparative skull and jaw study connect the evidence for this animal. Several fragments of one individual were assembled to examine dental and facial features. Renewed comparison of old collections clarified an early cat-like form.[1][2]
References
- National Museum of Natural History, Paris — Proailurus type specimen
- Peigné (1999) — Proailurus, an early felid
- IUCN/SSC Cat Specialist Group · Evolution
- Paleobiology Database — Stratigraphic records of Proailurus fossils
- Cooke (1991) — The Dinofelis skull and excavation records from Bolt's Farm
- Ditsong National Museum of Natural History (2025) — Comparison of two Dinofelis species
- Werdelin·Lewis (2001) — Reassessment of the morphology and evolution of Dinofelis
- Faurby·Morlo·Werdelin(2021) — CarniFOSS fossil carnivorous mammal body-mass data
Research questions
Similar bodies are not necessarily identical. Researchers examine differences in tooth and limb proportions as well as similarities to living cats. A familiar cat’s appearance provides a starting point for finding distinctive features of ancient felids.[3]
Observation
Move your gaze from the skull and jaws to the limbs and feet. Considering a broadly cat-like outline alongside small differences identified in research makes this early felid’s body more intriguing.[2][3]
Related organisms
Dinofelis barlowiPlacental mammalsFossil record age bounds · ≈ 5.33–0.774 MaEarly cat-like forms and later fossils
Examine the different records of bodies and time preserved in these two organisms. Proailurus lemanensis: a fossil animal revealing early cat-like forms through skull and jaw fragments that show dental and facial structures. Fossil database occurrence layers span approximately 27–20 million years ago, from the Oligocene to Miocene. Research on early felids compares skull and jaw features. Dinofelis barlowi: an extinct felid known from southern African fossils. Although a saber-toothed cat, several head and body features recall living leopards or lions. Skull and postcranial bones were collected at Bolt’s Farm near Sterkfontein, South Africa. A 1991 study estimated the fossil-bearing deposits at about 2 million years old.