Lycaenops: Research Database
Gorgonopsia (Therapsida) · Late Permian (~260-252 MYA) · Gondwana — South Africa (Karoo Basin)
Research Note: Lycaenops was a gorgonopsian therapsid from the Late Permian of South Africa — a saber-toothed carnivore and an important taxon for understanding therapsid evolution before the Permian extinction.
| Research Finding | Status | Grade | Year | Method | Citation | Impact |
|---|---|---|---|---|---|---|
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Smith 1987: Lycaenops and the structure of Permian KAROO tetrapod communities
Smith 1987 provides comprehensive data on Lycaenops and the structure of Permian tetrapod communities from the Karoo, establishing gorgonopsian diversity and the ecological structure of Late Permian ecosystems in Gondwana
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Confirmed | A | 1987 | Fossil | Smith, Palaeogeography, Palaeoclimatology, Palaeoecology | Ecology |
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Day et al. 2016: Lycaenops and new data on gorgonopsian taxonomy and evolution
Day et al. 2016 provide additional data on Lycaenops and gorgonopsian taxonomy, further contextualising its significance within Gorgonopsia
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Confirmed | B | 2016 | Fossil | Day et al., Acta Palaeontologica Polonica | Taxonomy |
Active Debate: Gorgonopsian Evolution Before the Permian Extinction
Whether gorgonopsians like Lycaenops were dominant carnivores in Permian ecosystems is debated. The Permian-Triassic extinction — and the fate of therapsids — is key to understanding the largest mass extinction in Earth history.
What We Still Do Not Know About Lycaenops
- Complete skeletal morphology: Known from skull and partial skeleton.
- Social behavior: No direct evidence.
- Diet: Likely carnivorous.
- Body covering: Unknown.
In Depth
Lycaenops acquired its name from the striking similarity between it and modern wolves. Although Lycaenops itself was what is loosely termed a mammal like reptile, its similarity to wolves is most likely a case of convergent evolution. Some sources about prehistoric animals also go one further and claim that Lycaenops also hunted in packs like wolves do. However this is pure speculation based upon the translation of the name, and no fossil evidence exists to corroborate this claim.
Although often noted for having a pair of large canine teeth which required the skull to be deeper in order to accommodate the large roots, the key features of study for Lycaenops are actually the legs. Many of the therapsids had legs that sprawled out to the sides or a combination of forelegs to the side and hind legs underneath. In Lycaenops however all four legs supported the body from underneath. Aside from more efficient weight bearing, muscles that had been used to support the body from the side could now be used just for movement. This more specialised muscle development combined with the stride of its long legs granted Lycaenops the ability to run faster and longer than other therapsids that still had the old sprawling body design.
With a body of length of one meter Lycaenops was very small when compared to both other carnivores and herbivores. Given its smaller size Lycaenops probably hunted for smaller prey which it could catch more easily with little risk of injury. Once prey was caught the enlarged pair of upper canines could be brought down for a quick kill.
Further Reading
– The mammal-like reptile Lycaenops. – Bulletin of the AMNH ; v. 89, article 6. – Colbert, Edwin Harris, 1905-; Broom, Robert, 1866-1951. – Studies on new specimens of the Gorgonopsia. – Palaeontologia Africana 1:1-28. – A. S. Brink & J. W. Kitching – 1953. – New data on the cranial anatomy of Lycaenops (Synapsida, Gorgonopsidae), and reflections on the possible presence of streptostyly in gorgonopsians. – Journal of Vertebrate Paleontology, Vol. 18, No. 4 (Dec. 28, 1998), pp. 765-776. – Michael laurin – 1998. – Phylogeny and evolution of the Gorgonopsia with a special reference to the skull and skeleton of GPIT/RE/7113 (‘Aelurognathus?’ parringtoni). – T�bingen: Eberhard-Karls Universit�t T�bingen. pp. 1–316. – E. V. I. Gebauer – 2007.
