...In stromatolites from before the Mesozoic era, algal fossils have usually been decomposed and destroyed by diagenesis, and there are also structures of similar morphology that are of non-biological origin (e.g. stalactites), so to identify stromatolites from older geological periods, geological surveys of the surrounding area, including the layer where they are produced, are necessary. In the past, many fossils were given scientific names, such as Cryptozoon and Collenia , but given their nature, the use of scientific names should be avoided. The morphological diversity of stromatolites is thought to be primarily governed by differences in environment. ... *Some of the terminology that mentions "Collenia" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…中生代以前のストロマトライトでは,続成作用により藻類化石が分解破壊されてしまっているのが普通で,また非生物起源で形態が似る構造(例えば鍾乳石)もあるため,古い地質時代のストロマトライトの認定には,産出層をはじめ周囲の地質調査が必要である。かつてクリプトゾーンCryptozoonやコレニアColleniaをはじめとして多くの化石としての学名が与えられてきたが,その性格からいって学名の適用はさけるべきである。 ストロマトライトの形態の多様性は,環境の差が一義的に支配すると考えられている。… ※「Collenia」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
〘noun〙 An organization of people who believe in Ch...
…Conservation science can be defined as the natur...
…the name of a group of primitive amphibians in t...
A city in eastern Saitama prefecture. It was incor...
…These three senses of direction are the basis fo...
〘Noun〙① A stone mill used to grind tea leaves to m...
…The family name was Owari-ya. (1) The first gene...
… In the Renaissance, Roman-style folding chairs ...
Russian religious philosopher. Born into a milita...
…[Hiroshi Aramata]. … *Some of the terminology th...
...Furthermore, this building coverage ratio rest...
A noble family that split off from the Northern b...
They are said to have acted as judges in musical ...
A deciduous tall tree of the Rosaceae family (APG...
An active volcanic island in the southernmost part...