Barnacles are arthropods of the subclass Cirripedia in the subphylum Crustacea. They are related to crabs and lobsters, with similar nauplius larvae. Barnacles are exclusively marine invertebrates; many species live in shallow and tidal waters. Some 2,100 species have been described.

There are approximately 1000 species belonging to four groups within the Cirripedia. They are the acorn and gooseneck barnacles (Thoracica), the tiny Acrothoracica, and two parasitic groups, the Rhizocephala and Ascothoracica.

The Cirripedia is the largest group of the subclass; it contains the Acrothoracica, Rhizocephala, and Thoracica, all of which contain representatives of marine and coastal waters.

Cirripede, any of the marine crustaceans of the infraclass Cirripedia (subphylum Crustacea). The best known are the barnacles. Adult cirripedes other than barnacles are internal parasites of marine invertebrates such as crabs, jellyfish, and starfish, and have no common name.

These genera belong to Cirripedia, a subclass of barnacles in the phylum of Crustacea, as classified by Chan et al. (2021) [1] and the World Register of Marine Species. [2] Their classification into order, superfamily, family, and subfamily is included.

The subclass Cirripedia encompasses four orders: the Ascothora-cica, Acrothoracica, Thoracica, and Rhizocephala. Representatives of each order occur in waters off California. The Thoracica, or true barnacles, are ecologically more important by virtue of their abun­ dance and conspicuousness. Therefore only a few comments on the

Cirripedia is the subclass for Barnacles, a type of invertebrate arthropod. They are fascinating marine creatures that are typically found in shallow and tidal waters.

A barnacle is a type of arthropod constituting the infraclass Cirripedia in the subphylum Crustacea, and is hence related to crabs and lobsters. Barnacles are exclusively marine, and tend to live in shallow and tidal waters, typically in erosive settings.

Jan 1, 2015 · Cirripedes are crustaceans, where the adult forms are so structurally and biologically diverse that it would be impossible to argue from these forms alone that they belong to this group of...

Order Cirripedia. There are two main kinds of marine barnacles: goose barnacles (with stalk) and acorn barnacles (without stalk). Their legs develop into feathery cirri for filtering water. Their larvae (nauplius, cipris) can swim freely in water.

The meaning of CIRRIPEDIA is a subclass of Crustacea comprising the barnacles, goose barnacles, and a few highly modified parasitic related forms, all being free-swimming in the larval stages but permanently attached or parasitic as adults.

Jul 18, 2023 · This book is a detailed examination of the sub-class Cirripedia, including figures of all of its species. It is an invaluable resource for anyone interested in the study of marine life and the...

Although Darwin (1851a) described the present day as the Age of Barnacles, Cirripedia have had a considerable geological history.

Summarising, the Cirripedia now comprises three orders, the Thoracica, or ‘true barnacles’, including Sessilia and Pedunculata; the Acrothoracica, or borrowing barnacles; and the Rhizocephala, parasites on other crustaceans.

Darwin's work on barnacles (Cirripedia), conducted between 1846 and 1854, has long posed problems for historians. Coming between his transmutation notebooks and the Origin of species, it has frequently been interpreted as a digression from Darwin's species work.

Aug 23, 2022 · The name of this subclass of Phylum Arthropoda, from the Latin Cirrus, comes from the particular conformation of the multiarticulated bifid appendages, present in number of six pairs on the thorax of the individuals, which, when projected externally to the carapace, resemble to a lock of curls.

Patricia Louise (Pat) Dudley (May 22, 1929 – September 30, 2004) was an American zoologist specializing in research of copepods. An early pioneer using an electron microscope to study copepod organs and tissues, she taught at Barnard College for 35 years and served as Chair of the Biological Sciences department.

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Catalogue of fossil Cirripedia in the Department of Geology (Printed by order of the Trustees, 1928), by British Museum (Natural History). Department of Geology and Thomas Henry Withers (page images at HathiTrust; US access only)

Dec 22, 2023 · Evaluation of the floating time of a corpse found in a marine environment using the barnacle Lepas anatifera L. (Crustacea: Cirripedia: Pedunculata). Forensic Science International. Elsevier BV.