New Mammal Fossil May Show How Ear Bones Evolved from Jaw Bones
New Mammal Fossil May Show How Ear Bones Evolved from Jaw Bones
An ancient animal’s hammer, anvil, and stirrup bones are at the base of the jaw but completely detached from it.
New Mammal Fossil May Show How Ear Bones Evolved from Jaw Bones
New Mammal Fossil May Show How Ear Bones Evolved from Jaw Bones

An ancient animal’s hammer, anvil, and stirrup bones are at the base of the jaw but completely detached from it.

An ancient animal’s hammer, anvil, and stirrup bones are at the base of the jaw but completely detached from it.

evolution
Single-Celled Organism Appears to Make Decisions
Single-Celled Organism Appears to Make Decisions
Ruth Williams | Dec 5, 2019
The unicellular species Stentor roeseli performs a form of sequential decision-making to avoid irritating stimuli.
Famous Fox Domestication Experiment Challenged
Famous Fox Domestication Experiment Challenged
Emily Makowski | Dec 4, 2019
The tamed foxes, whose appearances changed with breeding, weren’t wild to begin with, say the authors of a new study.
<em>Homo sapiens</em> Might Not Be Responsible for Neanderthal Demise
Homo sapiens Might Not Be Responsible for Neanderthal Demise
Catherine Offord | Nov 29, 2019
Researchers’ simulations suggest that small population sizes and inbreeding made Neanderthal populations vulnerable to chance fluctuations in population size.
Image of the Day: Horns and Wings
Image of the Day: Horns and Wings
Emily Makowski | Nov 29, 2019
Scarab beetle horns share a common genetic origin with wings.
Genomes Sequenced for Every US and Canada Butterfly
Genomes Sequenced for Every US and Canada Butterfly
Emily Makowski | Nov 20, 2019
Researchers analyzed more than 800 species.
Image of the Day: Brittle Star
Image of the Day: Brittle Star
Emily Makowski | Nov 20, 2019
This marine animal looks like a sea star, but don’t be fooled.
Image of the Day: Beetle Evolution
Image of the Day: Beetle Evolution
Emily Makowski | Nov 19, 2019
Plants, fungi, and bacteria likely contributed to insect diversity.
Genes from Bacteria Likely Aided Plants&rsquo; Move to Land
Genes from Bacteria Likely Aided Plants’ Move to Land
Shawna Williams | Nov 15, 2019
An analysis suggests that DNA cribbed from soil microbes enabled plants’ ancestors to colonize a terrestrial environment.
Image of the Day: <em>Fukuipteryx</em> Fossil
Image of the Day: Fukuipteryx Fossil
Emily Makowski | Nov 15, 2019
This ancient bird has a modern tail bone.