Free and Discounted Ebooks
Join 130,000 readers! Get our ebook deals straight to your inbox.

Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 6

Foraminifera to Fox, Edward

Cover image for


Author: Various Authors
Published: 1911
Language: English
Wordcount: 173,359 / 539 pg
Flesch-Kincaid Reading Ease: 49.1
LoC Category: AE
Downloads: 1,490
Added to site: 2011.12.22 31116
Genre: Reference

> Orbitolites (figs. 5, 6) we have a centre on a somewhat Milioline type; and after a few chambers in spiral succession, complete circles of chambers are formed. In the larger forms the new zones are of greater height, and horizontal bulkheads divide the

chamberlets into vertical tiers, each with its own pylomic pore.

[Illustration: FIG. 4.--Modifications of Peneroplis. 1, Dendritina; 2, Eu-Peneroplis.]

[Illustration: FIG. 5.--Shell of simple type of Orbitolites, showing primordial chamber a, and circumambient chamber b, surrounded by successive rings of chamberlets connected by circular galleries which open at the margin by pores.]

[Illustration: FIG. 6.--Animal of simple type of Orbitolites, showing primordial segment a, and circumambient segment b, surrounded by annuli of sub-segments connected by radial and circular stolon-processes.]

The Cheilostomellidae (fig. 3, 13) reproduce



Join 120,000+ fellow readers! Get Free eBooks and book bargains from ManyBooks in your inbox. 

We respect your email privacy

login | register

User ID


reset password

Author of the Day

Serenity Woods
Besides writing great romance novels, Serenity Woods enjoys juggling, archaeology and celebrating Christmas next to the pool. She lives in the sub-tropical Northland of New Zealand with her husband and teenage son and likes to write books about everyday people, with the issues that affect them. As our author of the day, Woods talks about her Christmas Boxset, Three Wise Men, why she is not a fan of alpha males and reveals what readers can expect from her pen next.
Read full interview...