Fossil Calcareous Algæ
نویسندگان
چکیده
منابع مشابه
First fossil record of parasitism in Devonian calcareous sponges (stromatoporoids).
INTRODUCTION Palaeozoic calcareous sponges (stromatoporoids) are common bio-constructing fossils; they are sometimes found in association with helicoidal structures of unknown biological affinities. The interaction between the tube-forming organisms has usually been classified as commensalism. METHODS About 260 stromatoporoid skeletons from the Middle Devonian (Givetian) of the Mont d'Haurs s...
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IT WILL BE SEEN FROM THE ABOVE THAT WE HAVE STUDIED THE CONDITIONS ASSOCIATED WITH THE DEPOSIT OF CALCAREOUS SALTS: (I) in connection with normal and pathological ossification, and (2) in pathological calcification as exhibited in (a) atheroma of the vessels; (b) calcification of caseating tubercular lesions; (c) calcification of inflammatory new growth, and (d) degenerating tumors; and we have...
متن کاملStudies upon Calcareous Degeneration.*
INTRODUCTION. METHODS. Staining methods . Chemical methods . THE PROCESS OF DEPOSIT OF CALCIUM SALTS IN BONE. THE PROCESS OF DEPOSIT OF CALCIUM SALTS UNDER PATHOLOGICAL CONDITIONS. In the arterial wall. In chronic inf lammat ion of the pleura. In calcified fibrornata. In the walls of ovar ian and broadl igament cysts. In tubercular nodules. In pancreat ic fat necrosis. ON THE PRESENCE OP SOAPS ...
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ژورنال
عنوان ژورنال: Nature
سال: 1879
ISSN: 0028-0836,1476-4687
DOI: 10.1038/019485a0