Archaeonectrus

Ar-kay-oh-nek-trus.
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Lilah Turner

Evolutionary Biologist

Lilah Turner investigates how prehistoric animals adapted to changing environments, offering insights into evolution's mechanisms.

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Name

Archaeonectrus ‭(‬Old swimmer‭)‬.

Phonetic

Ar-kay-oh-nek-trus.

Named By

Classification

Chordata,‭ ‬Reptilia,‭ ‬Sauropterygia,‭ ‬Plesiosauria,‭ ‬Pliosauridae‭, Rhomaleosauridae.

Diet

Piscivore.

Species

A.‭ ‬rostratus‭

Size

About 3.67‭ ‬meters long.

Known locations

England.

Time Period

Sinemurian of the Jurassic.

Fossil representation

Almost complete.

In Depth

       Originally described as a species of Plesiosaurus by Richard Owen in‭ ‬1865,‭ ‬it was identified as a distinct genus just under a hundred years later in‭ ‬1964.‭ ‬Archaeonectrus is now regarded as a rhomaleosaurid pliosaur, and would have been a predator of other marine organisms.

Further Reading

– A monograph of the fossil Reptilia of the Liassic formations. Part I, Sauropterygia. – Palaeontographical Soceity Monographs 17(75):1-40. – Richard Owen – 1865. – A new elasmosaurid plesiosaurian from the Early Cretaceous of Russia marks an early attempt at neck elongation (supplement). Zoological Journal of the Linnean Society. 192 (4): 1167–1194. – Valentin Fischer, Nikolay G. Zverkov, Maxim S. Arkhangelsky, Ilya M. Stenshin, Ivan V. Blagovetshensky & Gleb N. Uspensky – 2020.

SPECIES SPOTLIGHT