 | Sir Charles Lyell - 1838 - 606 páginas
...were detached. mollusca. The^upper valve (b Fig. 11.) is almost Fig. 11. invariably wanting, though occasionally found in a perfect state of preservation...some distance. In this case, we see clearly that the sea,UrchinfirSt Hved frOm y°Utft tO age, then died and lost its spines, i. Upper valve of the . .... | |
 | Sir Charles Lyell - 1838 - 582 páginas
...were detached. mollusca. The upper valve (b Fig. 11.) is almost Fig. 11. invariably wanting, though occasionally found in a perfect state of preservation...chalk at some distance. In this case, we see clearly tlrat the seaage, then died and lost its spines, i. Upper valve of the , . . ,„ Crania detached.... | |
 | Sir Charles Lyell - 1839 - 332 páginas
...extinct genus of bivalve mollusca. The upper valve (6 Fig. 11.) is almost invariably wanting, though occasionally found in a perfect state of preservation...its spines which were carried away. Then the young a. EMnus from the Crania adhered to the bared shell, and perishva^ve'of'the^nHtia ed in its turn ,... | |
 | Sir Charles Lyell - 1841 - 946 páginas
...vmlve of the' Crania attached. and lost its spines, which were 6. Upper valve of the crania detached. carried away. Then the young Crania adhered to the...turn ; after which the upper valve was separated from the lower before the Echinus became enveloped in chalky mud. It may be well to mention one more illustration... | |
 | Sir Charles Lyell - 1841 - 486 páginas
...Crania, a genus of bivalve mollusca. The upper valve (6, Fig. 13.) is almost invariably wanting, though occasionally found in a perfect state of preservation...this case, we see clearly that the sea-urchin first .£c»inM from the chalh, ]ived from youth to age, then died with lower valve of the ' >d lost its... | |
 | Sir Charles Lyell - 1845 - 338 páginas
...upper valve (b Fig. 11.) is almost invariably wanting, though occasionally found in a perfect slate of preservation in white chalk at some distance. In...its spines which were carried away. Then the young a. EcMntut from the Crania adhered to the bared shell, and perishva?ve'oftthe'Cra7ii'i ed 'n its turn... | |
 | Sir Charles Lyell - 1854 - 556 páginas
...Crania, a genus of bivalve mollusca. The upper valve (6, fig. 13) is almost invariably wanting, though occasionally found in a perfect state of preservation...youth to age, then died and lost its spines, which wciv carried away. Then the young Crania adhered to the bared shell, grew and perished in its turn;... | |
 | Charles Lyell - 1855 - 700 páginas
...mollusca. The upper valve (*> fig- 13.) is almost invariably wanting, though occasionally foumifln a perfect state of preservation in white chalk at...to the bared shell, grew and perished in its turn ; "the a^ter which the upper valve was separated from or the the lower before tbe Echinus became enveloped... | |
 | Sir Charles Lyell - 1866 - 910 páginas
...Crania, a genus of bivalve mollusca. The upper valve (b, fig. 13) is almost invariably wanting, though occasionally found in a perfect state of preservation...young Crania adhered to the bared shell, grew and _j" Crania perished in its turn; after which the upper valve was attached. separated from the lower... | |
 | Sir Charles Lyell - 1866 - 866 páginas
...invariably wanting, though occasionally found in a perfect state of preservation in white chalk ,. r T . • at some distance. In this case, we see clearly that...lost its spines, which were carried away. Then the from the young Crania adhered to the bared shell, grew and vafve'ofthe Crmia perished in its turn ;... | |
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The upper valve is almost invariably wanting, though occasionally found in a perfect state of preservation in the white chalk at some distance. In this case, we see clearly that the sea-urchin first lived from youth to age, then died and lost its spines,... 
