Drawing of fish along with internal organs
Researchers Visualize Heart From 380-Million-Year-Old Fish
A team of researchers in Australia have imaged fossilized soft organs of early jawed vertebrates for the first time, finding that our ancient fish ancestors’ hearts, livers, and stomachs are strikingly similar to ours.
Researchers Visualize Heart From 380-Million-Year-Old Fish
Researchers Visualize Heart From 380-Million-Year-Old Fish

A team of researchers in Australia have imaged fossilized soft organs of early jawed vertebrates for the first time, finding that our ancient fish ancestors’ hearts, livers, and stomachs are strikingly similar to ours.

A team of researchers in Australia have imaged fossilized soft organs of early jawed vertebrates for the first time, finding that our ancient fish ancestors’ hearts, livers, and stomachs are strikingly similar to ours.

vertebrates
A yellow-orange, translucent artist's rendition of a yunnanozoan, an ancient wormlike fish, that highlights the arches that make up its cartilage skeleton.
This Simple Fish May Have Been One of the First Vertebrates
Dan Robitzski | Jul 7, 2022
A fossil analysis suggests that the yunnanozoan, a wormlike fish that flourished around 520 million years ago, sported structures that were the precursors of the head and jaws of modern vertebrates.
diving beetle eggs
Diving Beetle Adults and Larvae Dismember, Eat Tadpoles: Study
Catherine Offord | Jan 13, 2020
The invertebrate predators prey on and lay their eggs near emerging tadpoles, potentially threatening the conservation of endangered frogs, researchers find.
African Killifish Are the Fastest-Maturing Vertebrates
Sukanya Charuchandra | Aug 6, 2018

A new study finds the fish begin reproducing at two weeks of age.

Image of the Day: Four Eyes
The Scientist Staff and The Scientist Staff | Apr 3, 2018
Ancient monitor lizards had an extra set of “eyes” on top of their heads.
Earth Experiencing Sixth Mass Extinction: Study
Kerry Grens | Jul 11, 2017
Scientists describe the number of vertebrate species experiencing population declines as “biological annihilation.”
Earliest Deuterostome Fossils Described
Kerry Grens | Jan 30, 2017
These millimeter-size sea creatures lived 540 million years ago.
Aural History
Geoffrey A. Manley | Sep 1, 2015
The form and function of the ears of modern land vertebrates cannot be understood without knowing how they evolved.
Ancient Fish Analyzed
Rina Shaikh-Lesko | Jun 13, 2014
Two paleontological findings yield insights into early vertebrate evolution.
Sequencing the Tree of Life
Anna Azvolinsky | Apr 24, 2014
Charting the progress of the various large-scale genome-sequencing projects as researchers working separately on their chosen species begin to pool analytical resources
Genome Digest
Tracy Vence | Apr 24, 2014
What researchers are learning as they sequence, map, and decode species’ genomes
DNA Jumps Between Vertebrates
Dan Cossins | Jan 3, 2013
Scientists show that horizontal transfer of a particular DNA sequence among a diverse range of vertebrates is more widespread than previously believed.
Double Duplication
Hayley Dunning | Jul 24, 2012
Two whole genome duplications boosted the complexity of the ancestor of all vertebrates, but also introduced potential for disease.