![The testimony of the rocks; . ASAPHUS CAUDATDS. i Silurian.) ORTHOCERAS SPIRIGERINA RETICULARIS. LATERALE. (Mountain Limestone.) (Old Red Sandstone.) and Tertiary, — the first, or ichthyic period, is markedchiefly, not by The testimony of the rocks; . ASAPHUS CAUDATDS. i Silurian.) ORTHOCERAS SPIRIGERINA RETICULARIS. LATERALE. (Mountain Limestone.) (Old Red Sandstone.) and Tertiary, — the first, or ichthyic period, is markedchiefly, not by](https://c8.alamy.com/comp/2CDYK13/the-testimony-of-the-rocks-asaphus-caudatds-i-silurian-orthoceras-spirigerina-reticularis-laterale-mountain-limestone-old-red-sandstone-and-tertiary-the-first-or-ichthyic-period-is-markedchiefly-not-by-its-great-fishes-but-by-the-peculiar-character-fig-80-fig-81-fig-82-fig-83-mu-a-margaritatus-bisulcattrs-belemitella-belemnitesmucroaata-sulcatds-lias-lias-chalk-oolite-of-its-brachipodous-and-cephalopodous-mollusca-and-in-itsearlier-stages-by-its-three-lobed-crustaceae-the-second-or-history-of-animals-135-reptilian-period-was-emphatically-th-2CDYK13.jpg)
The testimony of the rocks; . ASAPHUS CAUDATDS. i Silurian.) ORTHOCERAS SPIRIGERINA RETICULARIS. LATERALE. (Mountain Limestone.) (Old Red Sandstone.) and Tertiary, — the first, or ichthyic period, is markedchiefly, not by
![Sheer cliffs of old red sandstone conglomerate, RSPB's Fowlsheug Bird and Nature Reserve, Crawton, Aberdeenshire, Scotland Stock Photo - Alamy Sheer cliffs of old red sandstone conglomerate, RSPB's Fowlsheug Bird and Nature Reserve, Crawton, Aberdeenshire, Scotland Stock Photo - Alamy](https://c8.alamy.com/comp/B5DCHE/sheer-cliffs-of-old-red-sandstone-conglomerate-rspbs-fowlsheug-bird-B5DCHE.jpg)
Sheer cliffs of old red sandstone conglomerate, RSPB's Fowlsheug Bird and Nature Reserve, Crawton, Aberdeenshire, Scotland Stock Photo - Alamy
![Red Fort, which was built by red sandstone. It is one of the famous, and large forts of India. | Red fort, World heritage sites, Sandstone Red Fort, which was built by red sandstone. It is one of the famous, and large forts of India. | Red fort, World heritage sites, Sandstone](https://i.pinimg.com/736x/47/f2/bc/47f2bcddb1f39addd1902802418cdbcc.jpg)