Australian researchers have found the 380 million year old “heart” of an ancient armored fish.

SYDNEY, September 18 (Xinhua) – Australian researchers have discovered the 380 million-year-old “heart”, the oldest ever discovered. In the jawed fish from the primitive period including the stomach, intestines, and fossilized liver that provides new information on evolution in biology

Kate Trinajstik, a researcher from Curtin University’s Department of Molecular and Biology and the Western Australian Museum said the discovery was special and very rare. because the soft tissues of ancient creatures were discovered in a three-dimensional state.

“As a paleontologist who has studied fossils for over 20 years, I am truly amazed. to have discovered the heart of a 380-million-year-old ancestor in a beautiful three-dimensional state,” Trinagstig said in a statement. The findings were published in the journal Science on Friday (September 16).

For the first time, the elaborate S-shaped heart (S) has been discovered from an arthrodire, a jawed and armored fish-like creature from the Devonian period (Devonian) 419.2-358.9 million years ago, the heart has two chambers and the upper chambers are smaller than the lower chambers.

Trinagstig said the discovery revealed how the head and neck began to change to accommodate the jaw. This is an important step in the evolution of the human body. And it allows us to see all the organs of the primitive jawed fish which are not different from ours.

The researchers used state-of-the-art technologies such as neutron beams and synchrotron light to scan specimens still trapped in the limestone. and creates a three dimensional image of the soft tissue within his body. All the fossils were collected from the Kimberley region of Western Australia.

The study’s researchers worked with scientists from the Australian Institute of Nuclear Science and Technology in Sydney. and the European Synchrotron Radiation Institute in France.

Photo from Curtin University: A 380 million year old heart has been discovered from an archrodite fossil. at the Western Australian Museum, September 8, 2022)

(Image courtesy of Curtin University: Sketch of the internal anatomy of an arthrodite.)

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