Kronosaurus

From Safaripedia
Jump to: navigation, search
Kronosaurus

Kronosaurus (Krow-no-sore-us), ‬Kronus lizard, lived in the Early Cretaceous of Australia and South America and became extinct in the first of the Late Cretaceous. Kronosaurus is named after Kronos, the Greek god of time. Kronosaurus was a pliosaur. Plesiosaurs have been conventionally divided into the long neck plesiosaurs and short necked pliosaurs.


Content List

1. Genera & species

2. Characteristics

a. Size

b. Behavior

3. History of Discovery

4. Paleoenvironment

5. References


Genera and Species

Classification: Plesiosauria, ‬Pliosauroidea, ‬Pliosauridae

Species: K. ‬queenslandicus, ‬K. ‬boyacensis.


Characteristics

Kronosaurus had rounded rear teeth that were suited to crushing hard-shelled prey. The teeth were conical, and smaller than in other pliosaurs, allowing smaller to medium-sized prey to be manipulated and swallowed.


Size

LENGTH: 9 - 10 m (33 ft).

WEIGHT: 7 tons.


Behavior

Giant squids like Boreopeltis are known from Australia, where they show evidence of predation by Kronosaurus. Today’s giant squid live at depths of 600 – 1000 feet and are preyed on by Sperm whales. Another source of prey would have been the long necked elasmosaurid plesiosaurs that were quite common in the southern oceans. It would have torn its prey to pieces in a manner seen in the modern crocodile.


History of Discovery

Discovery, Longman ‬in ‬1924; initially only a jaw was found, and later a large skull. The reconstructions depend on related pliosaurs and the original size estimates are considered to be excessive (Dixon, 2006).


Paleoenvironment

Found in the vast inland sea that covered western Queensland and Columbia between 110 and 100 million years ago (Smith, n.d.).



References

1. Knol, R. (2013, March 13). The Early Cretaceous Sea. Retrieved May 22, 2014, from http://www.dinosaurcollectorsitea.com/ecretPliosaur.html

2. Dixon, D. (2006). The Complete Book of Dinosaurs (pp. 10-12). London UK: Hermes House.

3. Kronosaurus. (n.d.). Retrieved May 22, 2014, from http://www.prehistoric-wildlife.com/species/k/kronosaurus.html

4. Plesiosauria. (2008, August 13). Kronosaurus.

5. Smith, A. (n.d.). Kronosaurus Longman, 1924. Retrieved May 22, 2014, from http://plesiosauria.com/kronosaurus.php