Nemertea and Phylum

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Difference between Nemertea and Phylum

Nemertea vs. Phylum

Nemertea is a phylum of invertebrate animals also known as "ribbon worms" or "proboscis worms". In biology, a phylum (plural: phyla) is a level of classification or taxonomic rank below Kingdom and above Class.

Anatomical terms of location

Standard anatomical terms of location deal unambiguously with the anatomy of animals, including humans.

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Animal

Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia.

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Annelid

The annelids (Annelida, from Latin anellus, "little ring"), also known as the ringed worms or segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches.

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Anus

The anus (from Latin anus meaning "ring", "circle") is an opening at the opposite end of an animal's digestive tract from the mouth.

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Arthropod

An arthropod (from Greek ἄρθρον arthron, "joint" and πούς pous, "foot") is an invertebrate animal having an exoskeleton (external skeleton), a segmented body, and paired jointed appendages.

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Bilateria

The Bilateria or bilaterians, or triploblasts, are animals with bilateral symmetry, i.e., they have a head (anterior) and a tail (posterior) as well as a back (dorsal) and a belly (ventral); therefore they also have a left side and a right side.

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Brachiopod

Brachiopods, phylum Brachiopoda, are a group of lophotrochozoan animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs.

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Bryozoa

Bryozoa (also known as the Polyzoa, Ectoprocta or commonly as moss animals) are a phylum of aquatic invertebrate animals.

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Chordate

A chordate is an animal belonging to the phylum Chordata; chordates possess a notochord, a hollow dorsal nerve cord, pharyngeal slits, an endostyle, and a post-anal tail, for at least some period of their life cycle.

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Cilium

A cilium (the plural is cilia) is an organelle found in eukaryotic cells.

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Clade

A clade (from κλάδος, klados, "branch"), also known as monophyletic group, is a group of organisms that consists of a common ancestor and all its lineal descendants, and represents a single "branch" on the "tree of life".

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Cladistics

Cladistics (from Greek κλάδος, cládos, i.e., "branch") is an approach to biological classification in which organisms are categorized in groups ("clades") based on the most recent common ancestor.

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Class (biology)

In biological classification, class (classis) is a taxonomic rank, as well as a taxonomic unit, a taxon, in that rank.

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Ctenophora

Ctenophora (singular ctenophore, or; from the Greek κτείς kteis 'comb' and φέρω pherō 'to carry'; commonly known as comb jellies) is a phylum of invertebrate animals that live in marine waters worldwide.

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Cuticle

A cuticle, or cuticula, is any of a variety of tough but flexible, non-mineral outer coverings of an organism, or parts of an organism, that provide protection.

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Deuterostome

Deuterostomes (taxonomic term: Deuterostomia; meaning "second mouth" in Greek) are any members of a superphylum of animals.

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Dicyemida

Dicyemida, also known as Rhombozoa, is a phylum of tiny parasites that live in the renal appendages of cephalopods.

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Ecdysozoa

Ecdysozoa is a group of protostome animals, including Arthropoda (insects, chelicerata, crustaceans, and myriapods), Nematoda, and several smaller phyla.

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Echinoderm

Echinoderm is the common name given to any member of the phylum Echinodermata (from Ancient Greek, ἐχῖνος, echinos – "hedgehog" and δέρμα, derma – "skin") of marine animals.

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Entoprocta

Entoprocta, whose name means "anus inside", is a phylum of mostly sessile aquatic animals, ranging from long.

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Family (biology)

In biological classification, family (familia, plural familiae) is one of the eight major taxonomic ranks; it is classified between order and genus.

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Flatworm

The flatworms, flat worms, Platyhelminthes, Plathelminthes, or platyhelminths (from the Greek πλατύ, platy, meaning "flat" and ἕλμινς (root: ἑλμινθ-), helminth-, meaning "worm") are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.

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Gastrotrich

The gastrotrichs (phylum Gastrotricha), commonly referred to as hairybacks, are a group of microscopic (0.06-3.0 mm), worm-like, pseudocoelomate animals, and are widely distributed and abundant in freshwater and marine environments.

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Lophophore

The lophophore is a characteristic feeding organ possessed by four major groups of animals: the Brachiopoda, Bryozoa, Hyolitha, and Phoronida, which collectively constitute the protostome group Lophophorata.

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Mantle (mollusc)

The mantle (also known by the Latin word pallium meaning mantle, robe or cloak, adjective pallial) is a significant part of the anatomy of molluscs: it is the dorsal body wall which covers the visceral mass and usually protrudes in the form of flaps well beyond the visceral mass itself.

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Mollusca

Mollusca is a large phylum of invertebrate animals whose members are known as molluscs or mollusksThe formerly dominant spelling mollusk is still used in the U.S. — see the reasons given in Gary Rosenberg's.

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Nematode

The nematodes or roundworms constitute the phylum Nematoda (also called Nemathelminthes).

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Order (biology)

In biological classification, the order (ordo) is.

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Paraphyly

In taxonomy, a group is paraphyletic if it consists of the group's last common ancestor and all descendants of that ancestor excluding a few—typically only one or two—monophyletic subgroups.

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Phoronid

Phoronids (scientific name Phoronida, sometimes called horseshoe worms) are a small phylum of marine animals that filter-feed with a lophophore (a "crown" of tentacles), and build upright tubes of chitin to support and protect their soft bodies.

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Priapulida

Priapulida (priapulid worms, from Gr. πριάπος, priāpos 'Priapus' + Lat. -ul-, diminutive), sometimes referred to as penis worms, is a phylum of unsegmented marine worms.

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Proboscis

A proboscis is an elongated appendage from the head of an animal, either a vertebrate or an invertebrate.

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Protostome

Protostomia (from Greek πρωτο- proto- "first" and στόμα stoma "mouth") is a clade of animals.

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Rotifer

The rotifers (Rotifera, commonly called wheel animals) make up a phylum of microscopic and near-microscopic pseudocoelomate animals.

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Siboglinidae

Siboglinidae, also known as the beard worms, is a family of polychaete annelid worms whose members made up the former phyla Pogonophora (the giant tube worms) and Vestimentifera.

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Taxonomy (biology)

Taxonomy is the science of defining and naming groups of biological organisms on the basis of shared characteristics.

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