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Title Transcription
ペルムキ ホウサンチュウ ALBAILLELLARIA ノ ニケイセイ
Title Alternative (English)
"Dimorphic pairs" of Albaillellaia(Late Paleozoic radiolaria),Japan
File
language
eng
Author
Description
Dimorphic pairs occurred in Permian radiolarians which are normal form of domiant numbers called the N type and deformed shell characterized by an swollen of apical cone called the S type. Dimorphic pairs appeared in Albaillellaria of a bilaterally symmetry and covered by imperforated shell wall, such as Albaillella, Pseudoalbaillella, Follicucullus and Neoalbaillella.
Dimorphic pairs were examined in bedded chert sequences, and within a single bed of chert with respect to radiolarian blooming of the Permian time . In general occurrence rate of the S type from the single bed of the bedded chert, is about 3% of total number of species, however the S type of Pseudoalbaillella ornata of which the species is the biggest and mostly ornamented shell among species of Pseudoalbaillella as well as other Albaillellaria exceeds 20%.
Journal Title
Memoirs of the Faculty of Science, Shimane University
Volume
25
Start Page
119
End Page
129
ISSN
03879925
Published Date
1991-12-25
NCID
AN00108106
Publisher
島根大学理学部
Publisher Aalternative
The Faculty of Science, Shimane University
NII Type
Departmental Bulletin Paper
OAI-PMH Set
Faculty of Science and Engineering
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