The diversity of regenerative phenomena seen in adult metazoans, as well as their
underlying mechanistic bases, are still far from being comprehensively understood …

Tunicates encompass a large group of marine filter‐feeding animals and more than half of
them are able to reproduce asexually by a particular form of nonembryonic development …

We review morphological features of the amniote egg and embryos in a comparative
phylogenetic framework, including all major clades of extant vertebrates. We discuss 40 …

Higher diversity and dominance at lower latitudes has been suggested for colonial species.
We verified this pattern in species richness of ascidians, finding that higher colonial-to …

Our understanding of vertebrate origins and the backbone of human history evolves with
each new fossil find and DNA map. Many species have now had their genomes sequenced …

For more than a century, studies on tunicate muscle formation have revealed many
principles of cell fate specification, gene regulation, morphogenesis, and evolution. Here, we …

How two-chambered hearts in basal vertebrates have evolved from single-chamber hearts
found in ancestral chordates remains unclear. Here, we show that the teleost sinus venosus …

Background Mollusks display a striking morphological disparity, including, among others,
worm-like animals (the aplacophorans), snails and slugs, bivalves, and cephalopods. This …

Environmental Risk Assessment (ERA) often relies on a restricted set of species as bio-
indicators, introducing uncertainty when modeling complex environmental variables. This …

In many animals the head develops early, most of the body axis later. A larva composed
mostly of the develo** front end therefore can attain mobility and feeding earlier in …