Hemichordata (/ˌhɛmikɔːrˈdeɪtə/ HEH-mee-kor-DAY-tə) is a phylum which consists of triploblastic, enterocoelomate, and bilaterally symmetrical marine deuterostome...

Deuterostomia is further divided into 4 phyla: Chordata, Echinodermata, Hemichordata, and the extinct Vetulicolia known from Cambrian fossils. The extinct...

pterobranchs, is a class of small worm-shaped animals. They belong to the Hemichordata, and live in secreted tubes on the ocean floor. Pterobranchia feed by...

PMID 10781046. Biogeography and adaptations of torquaratorid acorn worms (Hemichordata: Enteropneusta) including two new species from the Canadian Arctic -...

Platyhelminthes, Nematoda, Annelida (segmented worms), Chaetognatha, Hemichordata, and Phoronida. For a list of marine animals that have been called "sea...

urchins, brittle stars, sea cucumbers, feather stars, sea lilies, etc.) Hemichordata (acorn worms, Pterobranchia, and possibly graptolites) (These together...

differences between the two phyla. Among lesser phyla of invertebrates are the Hemichordata, or acorn worms, and the Chaetognatha, or arrow worms. Other phyla include...

conodonts are chordates, but their internal placement is less certain. Hemichordata (which includes the acorn worms) was previously considered a fourth chordate...

Chordata. Hyman (1959), however, placed them near Echinodermata and gave Hemichordata a status of an independent phylum. Balanoglossus are burrowing, exclusively...

Hemichordata Genus Class Abundance Notes Images Chaunograptus Graptolithina? 11 specimens This enigmatic hemichordate has been interpreted as a possible...

pterobranchs, a rare group of modern marine animals belonging to the phylum Hemichordata. Comparisons are drawn with the modern hemichordates Cephalodiscus and...

The following is a list of the classes in each phylum of the kingdom Animalia. There are 107 classes of animals in 33 phyla in this list. However, different...

amphibians, reptiles, birds, and mammals. The deuterostomes also include the Hemichordata (acorn worms). The Ecdysozoa are protostomes, named after their shared...

Xenacoelomorpha is basal Phylum Chordata Ambulacraria (unranked) Phylum Hemichordata Phylum Echinodermata Phylum Cambroernida † Phylum Saccorhytida? † Cycloneuralia...

deep-sea hemichordates. Nature 434: 374-376}) is a family of acorn worms (Hemichordata) that lives in deep waters between 350 and 4000 meters (the species Tergivelum...

  Echinodermata Hemichordata †Cambroernida...

The Moltrasio Formation also known as the Lombardische Kieselkalk Formation is a geological formation in Italy and Switzerland. This Formation mostly developed...

Bilateria is an extremely diverse group of animals containing a vast majority of its species, largely due to the enormous amount of arthropods. This article...

Chaetognatha Bryozoa Mollusca Annelida Brachiopoda Phoronida Echinodermata Hemichordata Chordata In some protostomes, the embryonic blastocoele persists as a...

Holland, Nicholas D. (2012). "Observations on torquaratorid acorn worms (Hemichordata, Enteropneusta) from the North Atlantic with descriptions of a new genus...

for advancing the understanding of the early evolution of the phylum Hemichordata. Its discovery has been hailed as a "breakthrough" due to featuring both...

of Xenambulacrarians Various Acoelomorpha (nemertodermatids). Various Hemichordata (enteropneusts). Various Echinodermata from all extant classes. Bourlat...

Rhombozoa Acoelomorpha Chaetognatha Superphylum Deuterostomia Chordata Hemichordata Echinodermata Xenoturbellida Vetulicolia † Protostomia (unranked) Superphylum...

"Form and feeding mechanism of a living Planctosphaera pelagica (phylum Hemichordata)". Marine Biology. 120 (4): 521–533. Bibcode:1994MarBi.120..521H. doi:10...

Annelida Phylum Arthropoda Subgrade Enterocoela Phylum Brachiata or Pogonophora Phylum Chaetognatha Phylum Echinodermata Phylum Hemichordata Phylum Chordata...

Hemichordata Genus Phylum Higher taxon Abundance Notes Images Desmograptus Hemichordata Graptolithina A graptolite of the order Dendroidea that is characterized...

Deland, C.; Bullock, T. H. (2010). "A revision of the genus Saccoglossus (Hemichordata: Enteropneusta: Harrimaniidae) with taxonomic descriptions of five new...

pterobranch Rhabdopleura recondita Beli, Cameron and Piraino, 2018 (Hemichordata, Graptolithina)" (PDF). Marine Biodiversity. 49 (4): 1657–1666. Bibcode:2019MarBd...

A tornaria is the planktonic larva of some species of Hemichordata such as the acorn worms. It is very similar in appearance to the bipinnaria larvae of...

vitellaria, brachiollaria, pluteus, ophiopluteus, echinopluteus, auricularia Hemichordata tornaria Urochordata tadpole (does not feed, technically a "swimming...