Borítókép a Isastrea - hoz
Könyv címe:

Isastrea

Genus, insect, family, species, autochalca

Part Press (14.08.2013 )

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ISBN-13:

978-620-1-54137-5

ISBN-10:
6201541373
EAN:
9786201541375
Könyv nyelve:
angol
Ismertető:
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Isastrea is an extinct genus of coral which lived during the Jurassic and Cretaceous. Its fossils have been found in Europe, Africa, and North America.Isastrea belonged to a group known as the hexacorals, so named for the shape of each individual polyp skeleton (corallite). Each corallite was between 3 millimetres (0.12 in) and 15 millimetres (0.59 in) in diameter. In addition, 30–80 septa (walls dividing body cavities) were present in each animal.Its walls were "weak, discontinuous or absent". In some species, adjacent septa would fuse. Dissepiments ("small blistery plates" serving the purpose of internal support) were plentiful in the animal. Columella (central "rod- or plate-like" structures) were present as well, but were not very strong. The genus is believed to have lived in colonies (each of which could have been 39 inches (0.99 m) long) and formed coral reefs.The colonies were "massive", "encrusting, platey, dome-shaped or sometimes ramose".
Kiadó:
Part Press
Weboldal:
http://www.betascript-publishing.com
Szerkesztette:
Ben Stacy Jerrik
Oldalszám:
104
Kiadja:
14.08.2013
Raktárkészlet:
Raktáron
Kategória:
Zoológia
Ár:
265,93 HK$
Kulcsszavak:
Family, species, genus, Insect, Autochalca

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