Скачать или смотреть Quinkana - Australian Terrestrial Crocodile

Hi, welcome to Enchiridion. I am very excited to share with you these facts on Quinkana.

Quinkana was a mekosuchine crocodilian that lived in Australia from about 24 million to about 40,000 years ago. By the Pleistocene, Quinkana had become one of the top terrestrial predators of Australia, equipped with long legs and blade-like or ziphodont teeth similar to those of theropod dinosaurs.

Quinkana was one of the last surviving terrestrial crocodiles, and disappeared from the fossil record as recently as 40,000 (forty thousand) years ago. This disappearance also coincides with the disappearance of numerous large mammals from Australia and is thought to be a result of the first humans arriving on the continent. Even if Quinkana didn’t come into direct contact with human hunters, it may have simply been out-competed by them.

There are two main features of Quinkana that indicate a terrestrial lifestyle. First, the legs are better able to support and carry the body clear off the ground. Most crocodiles we know today are primarily aquatic and are only able to push themselves along on their bellies. Second, the type of tooth. Aquatic crocodiles usually have conical teeth that are very good for holding onto struggling prey as they drown it underwater. However, because it lived on land, Quinkana could not use water to drown its prey, so conical teeth would be of limited use. Rather, the teeth were more like knives, compressed laterally, recurved and with serrated edges. This means that a bite from Quinkana would do a lot of damage to a softer-bodied prey item like a mammal. Even if the prey survived the initial attack and escaped it would probably succumb to shock and blood loss in a short period of time, meaning Quinkana would just have to remain its time until the prey was too weak to escape.

There is considerable size variation in the species of Quinkana. The type species Quinkana fortirostrum, a fragmentary, Pliocene-aged specimen is the largest at 16.4 to 19.7 feet, or 5 to 6 meters long. Earlier species of the genus like meboldi and timara were smaller at around 6.6 feet, or 2 meters long. The smaller species are also the older ones, which means that as the genus existed, individuals and newly emerging species steadily grew to larger sizes as seen by Quinkana fortirostrum. The large size of the type species possibly made it at the time one of Australia’s largest predators, second only to the giant monitor lizard, Megalania.

Quinkana means “native spirit.” It comes from the “Quinkans”, a legendary folk from Aboriginal myths.

It was named by Molnar in 1981.

It belongs to the Kingdom Animalia, the Phylum Chordata, the Class Reptilia, the Order Crocodilia, the Family Crocodylidae, the Subfamily Mekosuchinae, the Genus Quinkana and the Type Species Quinkana fortirostrum.

Quinkana is a genus within the subfamily Mekosuchinae. Other genera included in this family include Australosuchus, Baru, Kambara, Mekosuchus, Pallimnarchus, and Trilophosuchus.

There are numerous species within the genus Quinkana, with the type species being Quinkana fortirostrum from the Pliocene and Pleistocene of Queensland and other species like Quinkana babarra from the Early Pliocene of Queensland, meboldi from the Late Oligocene of Queensland, and timara from the Middle Miocene of the Northern Territory.

It was a carnivore.

It was between 6.6 feet to 19.7 feet, or 2 to 6 meters long, depending on the species.

It has been discovered in Queensland, Australia. It lived in terrestrial, fluvial-lacustrine, and alluvial fan environments.

It lived during the Miocene of the Neogene through to the Ionian of the Pleistocene, 24 million to 40,000 years ago.

Fossil representation includes several specimens including two skulls.

As always, thank you for watching. This is Enchiridion, see you next time.

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Table of Contents:
0:00 - Introduction
0:25 - One Of The Last Surviving Crocodiles
0:49 - A Terrestrial Lifestyle
1:46 - Size Variation Among Species
2:34 - Naming
2:42 - Named By
2:46 - Scientific Classification
3:01 - Taxonomy
3:16 - Species
3:37 - Diet
3:39 - Size
3:47 - Known Locations
3:55 - Time Period
4:03 - Fossil Representation
4:09 - Outro
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Image and Video Sources:
Icons from Flat Icon

Audio Source:
Walking with Dinosaurs OST, 11 - Jurassic Forest

Sources:
Quinkana. (2020, March 18). Retrieved March 27, 2021, from https://enhm.com.au/museum/megafauna/...
Quinkana. (2021, March 14). Retrieved March 27, 2021, from https://en.wikipedia.org/wiki/Quinkana
Quinkana. (n.d.). Retrieved March 27, 2021, from http://fossilworks.org/bridge.pl?a=ta...
Quinkana. (n.d.). Retrieved March 27, 2021, from https://australian.museum/learn/austr...
Www.prehistoric-wildlife.com, D. (n.d.). Quinkana. Retrieved March 27, 2021, from http://www.prehistoric-wildlife.com/s...