Changes

59:5.8 Two groups of [http://en.wikipedia.org/wiki/Echinoderms echinoderms] became especially well [[developed]], and they are in [[reality]] the guide [[fossils]] of this [[epoch]]. The large shell-feeding [http://en.wikipedia.org/wiki/Sharks sharks] were also highly [[evolved]], and for more than five million years they [[dominated]] the [[oceans]]. The climate was still mild and equable; the [[marine]] life was little changed. [http://en.wikipedia.org/wiki/Fresh_water fish Fresh-water fish] were [[developing]] and the [http://en.wikipedia.org/wiki/Trilobites trilobites] were nearing [[extinction]]. Corals were scarce, and much of the limestone was being made by the [http://en.wikipedia.org/wiki/Crinoids crinoids]. The finer building limestones were laid down during this epoch.

59:5.8 Two groups of [http://en.wikipedia.org/wiki/Echinoderms echinoderms] became especially well [[developed]], and they are in [[reality]] the guide [[fossils]] of this [[epoch]]. The large shell-feeding [http://en.wikipedia.org/wiki/Sharks sharks] were also highly [[evolved]], and for more than five million years they [[dominated]] the [[oceans]]. The climate was still mild and equable; the [[marine]] life was little changed. [http://en.wikipedia.org/wiki/Fresh_water fish Fresh-water fish] were [[developing]] and the [http://en.wikipedia.org/wiki/Trilobites trilobites] were nearing [[extinction]]. Corals were scarce, and much of the limestone was being made by the [http://en.wikipedia.org/wiki/Crinoids crinoids]. The finer building limestones were laid down during this epoch.

59:5.9 The waters of many of the inland seas were so heavily charged with lime and other http://en.wikipedia.org/wiki/Minerals minerals] as greatly to [[interfere]] with the [[progress]] and [[development]] of many [[marine]] [[species]]. [[Eventually]] the seas cleared up as the result of an extensive stone deposit, in some places containing zinc and lead.

59:5.9 The waters of many of the inland seas were so heavily charged with lime and other [http://en.wikipedia.org/wiki/Minerals minerals] as greatly to [[interfere]] with the [[progress]] and [[development]] of many [[marine]] [[species]]. [[Eventually]] the seas cleared up as the result of an extensive stone deposit, in some places containing zinc and lead.

59:5.10 The deposits of this early [http://en.wikipedia.org/wiki/Carboniferous Carboniferous age] are from 500 to 2,000 feet thick, consisting of sandstone, shale, and limestone. The oldest strata yield the [[fossils]] of both [[land]] and [[marine]] [[animals]] and [[plants]], along with much gravel and basin sediments. Little workable coal is found in these older strata. These depositions throughout Europe are very similar to those laid down over North America.

59:5.10 The deposits of this early [http://en.wikipedia.org/wiki/Carboniferous Carboniferous age] are from 500 to 2,000 feet thick, consisting of sandstone, shale, and limestone. The oldest strata yield the [[fossils]] of both [[land]] and [[marine]] [[animals]] and [[plants]], along with much gravel and basin sediments. Little workable coal is found in these older strata. These depositions throughout Europe are very similar to those laid down over North America.