Our planet, its past and future; or, Lectures on geology . Micnistcr cor-ani; Auauchytca ovata. lepresents one species from the chalk of Knglntid; andFig. 33, another from the ciialk of France. Micrastcrmeans little star; and co>--a>2^Mi>m«?, snakc-Iu-art: itsshape and its markings suggesting the name Andu-dnjtes means not pressed ; and (wata, egg-shaped ; 200 LECTURES ON GEOLOfiV. Fi?. 34. ilio shape again suggesting the name. Corals, s[)onges,star-fislies, and other zoophytes^, are frequently lnundin flint-nodules ; the sponges often giving shape to theHints, their pores havi
Our planet, its past and future; or, Lectures on geology . Micnistcr cor-ani; Auauchytca ovata. lepresents one species from the chalk of Knglntid; andFig. 33, another from the ciialk of France. Micrastcrmeans little star; and co>--a>2^Mi>m«?, snakc-Iu-art: itsshape and its markings suggesting the name Andu-dnjtes means not pressed ; and (wata, egg-shaped ; 200 LECTURES ON GEOLOfiV. Fi?. 34. ilio shape again suggesting the name. Corals, s[)onges,star-fislies, and other zoophytes^, are frequently lnundin flint-nodules ; the sponges often giving shape to theHints, their pores having been filled by silieious 34 represents a pear-shaped sponge from Eng-land; and Fig. 35, anothercretaceous sponge, some-what like a iunnel: theyare of solid flint. Shells of many kindsare common in cretaceousrocks. ^loYO than a thou-sand species are known, grew to an immense size, andwere of great beauty. Cephalopods, sucli as tu ammouite and nautilus,abound. Several cephalopods existed which are appar-ently modified forms of t!
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Keywords: ., bookcentury1800, bookdecade1880, bookidourplanetits, bookyear1881
