Dinaelurus

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Dinaelurus
Temporal range: Early to Late Oligocene (Rupelian to Chattian),
Holotype skull
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Placentalia
Order: Carnivora
Family: †Nimravidae
Subfamily: †Nimravinae
Genus: †Dinaelurus
Eaton, 1922
Species:
†D. crassus
Binomial name
†Dinaelurus crassus
Eaton, 1922

Dinaelurus is a genus of the Nimravidae, an extinct family of feliform mammalian carnivores, also known as "false saber-toothed cats". Assigned to the subfamily Nimravinae, Dinaelurus was endemic to North America during the Oligocene epoch (32.6—27.2 mya), existing for approximately 5.4 million years.[1] Including supplementary materials

Taxonomy

Dinaelurus was named by George Francis Eaton in 1922, with a single species, Dinaelurus crassus. It was assigned to Nimravinae by Flynn and Galiano in 1982.[2][3] One specimen was found in the John Day Formation in Oregon.

Description

Dinaelurus had a skull extremely broad for its length and had conical teeth; it exhibited little or no development of sabertooth features and had more rounded cheek teeth with no serrated ridges. It had a relatively gracile skeleton[4] and may have had digitigrade feet.[5] It is believed that Dinaelurus was a cursorial predator that ran down its prey. This is suggested by the nimravid's short face[4] and large nostrils, similar to those of a cheetah, which is also a cursorial predator.[5]

Sources

  1. Barrett, Paul Zachary (26 October 2021). "The largest hoplophonine and a complex new hypothesis of nimravid evolution". Scientific Reports. 11 (1): 21078. Bibcode:2021NatSR..1121078B. doi:10.1038/s41598-021-00521-1. PMC 8548586. PMID 34702935. S2CID 240000358.
  2. Flynn, John J. and Henry Galiano. 1982. Phylogeny of early Tertiary Carnivora, with a description of a new species of Protictis from the middle Eocene of northwestern Wyoming. American Museum Novitates.
  3. Martin, Larry D. 1998. "Nimravidae." In Christine M. Janis, Kathleen M. Scott, Louis L. Jacobs (eds.), Evolution of Tertiary Mammals of North America. Cambridge, England: Cambridge University Press. 2 volumes (1998-2008).
  4. Bryant, Harold N. (1996). "Nimravidae". In Donald R. Prothero and Robert J. Emry (ed.). The Terrestrial Eocene-Oligocene Transition in North America. Cambridge, England: Cambridge University Press. p. 468. ISBN 0521433878.
  5. Martin 1998, p. 228.