Micraster

Micraster Temporal range: Late Cretaceous
Micraster sp. fossil at the Geological Museum, Copenhagen
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Subclass:	Euechinoidea
Order:	Spatangoida
Genus:	Micraster Agassiz, 1836

Micraster is an extinct genus of echinoid from the Late Cretaceous. Its remains have been found in Africa, Antarctica, Europe, and North America. Micraster was an infaunal echinoid living in a burrow below the sediment surface. the test is clearly bilateral and there is a deep anterior groove to take in water containing organic particles to the mouth. The tube feet keep a supply of nutrient-laden water moving into the burrow. The anus has a waste tube behind it.

Sources

• Fossils (Smithsonian Handbooks) by David Ward (Page 185)

External links

• Micraster in the Paleobiology Database

This prehistoric echinoderm-related article is a stub. You can help Wikipedia by expanding it.v · Categories: Echinoidea Prehistoric invertebrates Cretaceous animals Prehistoric animals of Africa Extinct animals of Antarctica Prehistoric animals of Europe Prehistoric animals of North America Prehistoric echinoderm stubs Wikimedia Foundation. 2010. Игры ⚽ Нужен реферат? Antonio José de Sucre Airport Gabriel Fehervari Look at other dictionaries: Micraster — Mi*cras ter, n. [NL., fr. Gr. mikro s small + ? star.] (Paleon.) A genus of sea urchins, similar to Spatangus, abounding in the chalk formation; from the starlike disposal of the ambulacral furrows. [1913 Webster] …   The Collaborative International Dictionary of English micraster — ● micraster nom masculin Oursin bilatéral en forme de cœur, fossile dans le crétacé et dont les diverses espèces permettent la datation relative des terrains …   Encyclopédie Universelle micraster — mi·cras·ter …   English syllables micraster — mīˈkrastə(r) noun Usage: capitalized Etymology: New Latin, from micr + aster : a genus of extinct heart urchins (order Exocycloida) with ambulacral furrows arranged in a small star on the dorsal surface …   Useful english dictionary Antrocaryon micraster — taxobox status = VU status system = IUCN2.3 regnum = Plantae unranked divisio = Angiosperms unranked classis = Eudicots unranked ordo = Rosids ordo = Sapindales familia = Anacardiaceae genus = Antrocaryon species = A. micraster binomial =… …   Wikipedia Asteropeia micraster — Taxobox status = EN | status system = IUCN3.1 regnum = Plantae divisio = Magnoliophyta classis = Magnoliopsida ordo = Malpighiales familia = Asteropeiaceae genus = Asteropeia species = A. micraster binomial = Asteropeia micraster binomial… …   Wikipedia Heliangelus micraster — mažoji nimfa statusas T sritis zoologija | vardynas atitikmenys: lot. Heliangelus micraster angl. little sunangel vok. Goldkehl Sonnennymphe, f pranc. héliange menu, f ryšiai: platesnis terminas – nimfos …   Paukščių pavadinimų žodynas Goldkehl-Sonnennymphe — Heliangelus micraster gemalt von John Gould Systematik Klasse: Vögel (Aves) Ordnung …   Deutsch Wikipedia Little Sunangel — Taxobox name = Little Sunangel status = LC | status system = IUCN3.1 regnum = Animalia phylum = Chordata classis = Aves ordo = Apodiformes familia = Trochilidae genus = Heliangelus species = H. micraster binomial = Heliangelus micraster binomial… …   Wikipedia Asteropeia — Systematik Klasse: Bedecktsamer (Magnoliopsida) Eudikotyledonen Kerneudikotyledonen Ordnung: Nelkenartige (Caryophyllales) …   Deutsch Wikipedia 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”