. Outlines of natural theology for the use of the Canadian student [microform] : selected and arranged from the most authentic sources. Natural history; Natural theology; Sciences naturelles; Théologie naturelle. ] (I I >. f! *, i i / ' < t. 352 i^ successively introduced upon earth in past geologi- cal ages. Among the oldest formations, we find pedunculated crinoids only, and this order remains prominent for a long period of successive periods; next come free crinoids and asteroids; next echi- noids, the successive appearance of which, since the triassic period to the present day, coinc
. Outlines of natural theology for the use of the Canadian student [microform] : selected and arranged from the most authentic sources. Natural history; Natural theology; Sciences naturelles; Théologie naturelle. ] (I I >. f! *, i i / ' < t. 352 i^ successively introduced upon earth in past geologi- cal ages. Among the oldest formations, we find pedunculated crinoids only, and this order remains prominent for a long period of successive periods; next come free crinoids and asteroids; next echi- noids, the successive appearance of which, since the triassic period to the present day, coincides also with the gradation of their sub-divisions, as deter- mined by their structure ; and it was not until the present period, that the highest echinoderms, the holothuroids, have assumed a prominent position in their class. ^ Among acephala,* there is not any more uncer- tainty, respecting the relative rank of their living representatives, than among echinoderms. Every zoologist acknowledges the inferiority of the bryozoaf and brachciapods,t when compared with lamellibran- chiata ;§ and among these, the inferiority of the mono- myaria, in comparison with the dimyaria, would hardly be denied. Now if any fact is well estab- lished in palaeontology, it is the earlier appearance and prevalence of bryozoa and brachciopods in the oldest geological formations, and their extraordinary developement for a long succession of ages, until lamellibranchiata assume the ascendancy which they maintain to the fullest extent at present. The order of succession of vertebrata in past ages exhibit features in many respects differing greatly * a, withoat; Kfipa\-fi, a head. { fipaxtoy, an arm; -noSfs, feet. t Ppvov, moss; Zwov, animal. § Lamella, a plate; jSpayx'") &^'. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original wor
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Keywords: ., bookcentury1800, booksubjectnaturalh, booksubjectnaturaltheology
