Charles Darwin appreciated the conceptual difficulty in accepting that an organ as wonderful
as the vertebrate eye could have evolved through natural selection. He reasoned that if …

Lampreys and hagfish, which together are known as the cyclostomes or 'agnathans', are the
only surviving lineages of jawless fish. They diverged early in vertebrate evolution, before …

The sea lamprey (Petromyzon marinus) serves as a comparative model for reconstructing
vertebrate evolution. To enable more informed analyses, we developed a new assembly of …

As the only surviving lineages of jawless fishes, hagfishes and lampreys provide a crucial
window into early vertebrate evolution,–. Here we investigate the complex history, timing …

Lampreys are representatives of an ancient vertebrate lineage that diverged from our own∼
500 million years ago. By virtue of this deeply shared ancestry, the sea lamprey (P. marinus) …

Programmed DNA loss is a gene silencing mechanism that is employed by several
vertebrate and nonvertebrate lineages, including all living jawless vertebrates and …

Hagfish and lampreys are the only living representatives of the jawless vertebrates
(agnathans), and compared with jawed vertebrates (gnathostomes), they provide insight into …

Cyclostomes, comprising jawless vertebrates such as lampreys and hagfishes, are the sister
group of living jawed vertebrates (gnathostomes) and hence an important group for …

Hagfish depart so much from other fishes anatomically that they were sometimes considered
not fully vertebrate. They may represent:(i) an anatomically primitive outgroup of vertebrates …

Two rounds of whole-genome duplications are thought to have played an important role in
the establishment of gene repertoires in vertebrates. These events occurred during chordate …