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An artist's rendering of the ancient arthropod Erratus sperare
Anatomical Firsts in Early Arthropods
A team of scientists have discovered an ancient arthropod that may show the origins of branched limbs and the first gill-like breathing structures in the clade.
Anatomical Firsts in Early Arthropods
Anatomical Firsts in Early Arthropods

A team of scientists have discovered an ancient arthropod that may show the origins of branched limbs and the first gill-like breathing structures in the clade.

A team of scientists have discovered an ancient arthropod that may show the origins of branched limbs and the first gill-like breathing structures in the clade.

limb development
lewis wolpert obituary developmental biology embryo 14 day rule
High Profile Developmental Biologist Lewis Wolpert Dies at 91
Shawna Williams | Feb 16, 2021 | 2 min read
Wolpert, who conducted research at University College London, was known for his work on morphogenesis and pattern development in embryos and for his multiple books and broadcast appearances.
A Simple Genetic Change Adds Limb-Like Bones to Zebrafish Fins
Abby Olena, PhD | Feb 5, 2021 | 4 min read
A gain-of-function mutation in a single gene reveals ancient limb-forming capacity that has been preserved for hundreds of millions of years.
Image of the Day: Swiss Army Crustacean
The Scientist Staff and The Scientist Staff | May 2, 2018 | 1 min read
The tools researchers used to study how this amphipod’s limbs develop could help inform our understanding of cell lineages and fates.
Image of the Day: Original Fin
The Scientist Staff and The Scientist Staff | Apr 2, 2018 | 1 min read
Researchers identify the genetics underlying the development of dorsal fins in ancient fish.
Nailing Regeneration
Sabrina Richards | Jun 12, 2013 | 3 min read
Researchers identify the signaling program that enables finger and toenail stem cells to direct digit regeneration after amputation.
All In Proportion
Savraj S. Grewal | Mar 1, 2013 | 1 min read
Drosophila insulin-like peptides (dILPs) regulate part of the signaling pathway that helps keep organs growing in proportion during development.
Instant Messaging
Savraj S. Grewal | Mar 1, 2013 | 9 min read
During development, communication between organs determines their relative final size.
Rita Levi-Montalcini Dies
Kelly Rae Chi | Jan 1, 2013 | 3 min read
The neurophysiologist who earned a Nobel Prize for discovering nerve growth factor has passed away at age 103.
Skeleton Keys
Lewis Wolpert | May 14, 2011 | 3 min read
There are a surprising number of unknowns about how our limbs come to be symmetrical.
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