Skip to main content
Select Source:

Articulata

Articulata
1. (phylum Brachiopoda) A class of brachiopods in which the calcareous valves are impunctate, punctate, or pseudo-punctate. The fibrous or prismatic secondary layer and non-fibrous primary layer are well differentiated. Hinge teeth and dental sockets are developed. Lophophore support is formed from modifications of socket ridges to give crura, loops, or spires. The alimentary canal ends blindly. Articulate brachiopods first appeared in the Lower Cambrian. There are six orders, with 37 super families.

2. (subphylum Crinozoa, class Crinoidea) A subclass containing all living, stalked crinoids, plus the feather stars, which are identified by the arrangement of the skeletal plates forming the calyx. Articulation between the radial and brachial plates, and in the majority of brachials, is muscular, with a well-developed fulcral ridge. The arms are always uniserial. All post-Palaeozoic crinoids belong to the Articulata.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"Articulata." A Dictionary of Zoology. . Encyclopedia.com. 14 Nov. 2018 <https://www.encyclopedia.com>.

"Articulata." A Dictionary of Zoology. . Encyclopedia.com. (November 14, 2018). https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/articulata-0

"Articulata." A Dictionary of Zoology. . Retrieved November 14, 2018 from Encyclopedia.com: https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/articulata-0

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

Articulata

Articulata
1. (phylum Brachiopoda) A class of brachiopods, existing from the Lower Cambrian to the present day, in which the shell is calcareous and comprises valves hinged by teeth in one valve and sockets in the other. The pedicle is of a horny material. Their main radiation was in the early Ordovician; of the 7 orders present in the Palaeozoic, 3 are still extant.

2. (sea lilies; subphylum Crinozoa, class Crinoidea) Subclass of sea lilies (crinoids) in which the basal plates are small or strongly reduced. Articulation between the radial and brachial plates, and in the majority of brachials, is muscular, with a well-developed fulcral ridge. The arms are always uniserial. All post-Palaeozoic crinoids belong to the Articulata.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"Articulata." A Dictionary of Earth Sciences. . Encyclopedia.com. 14 Nov. 2018 <https://www.encyclopedia.com>.

"Articulata." A Dictionary of Earth Sciences. . Encyclopedia.com. (November 14, 2018). https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/articulata

"Articulata." A Dictionary of Earth Sciences. . Retrieved November 14, 2018 from Encyclopedia.com: https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/articulata

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.