Deuterostomes are the major division of animal life which includes sea stars, acorn worms,
and humans, among a wide variety of ecologically and morphologically disparate taxa …

The last comprehensive reviews of ecology and natural history of ascidians were included in
the excellent 1971 publication by Millar on the biology of ascidians and the 1991 treatise on …

Echinoderms are a major group (phylum) of invertebrate animals with a rich fossil record
stretching back to the Cambrian period, approximately 518 million years ago. While all …

Deuterostomes are a monophyletic group of animals that include the vertebrates,
invertebrate chordates, ambulacrarians and xenoturbellids. Fossil representatives from most …

Summary Ambulacraria, comprising Hemichordata and Echinodermata [1], is closely related
to Chordata, making it integral to understanding chordate origins and polarizing chordate …

Phylonyms is an implementation of PhyloCode, which is a set of principles, rules, and
recommendations governing phylogenetic nomenclature. Nearly 300 clades-lineages of …

Les deutérostomiens sont un groupe monophylétique d'animaux multicellulaires qui inclut
les chordés, un phylum qui possède un plan du corps unique parmi les métazoaires. Les …

Alternation of left and right antimeres of segmental structures, generally known as the glide-
reflection symmetry, was found to be unexpectedly widespread in deuterostomes. It occurs …

Background The combination of a meager fossil record of vermiform enteropneusts and their
disparity with the tubicolous pterobranchs renders early hemichordate evolution conjectural …

Echinoderms are a major group of invertebrate deuterostomes that have been an important
component of marine ecosystems throughout the P hanerozoic. Their fossil record extends …