Caitonia
|
Caytonia is a type of fossil plant that lived from the Devonian to the Jurassic period. The leaf blade is made up of palmately divided pinnate leaflets, and the pinnate leaflets that make up the megasporophyll contain many ovules and have an opening through which the microspores enter. The microsporophyll has an anther divided into four lobes. This species is thought to be phylogenetically connected to ferns and gymnosperms. Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information |
|
〘名〙 (caytonia) 化石植物の一種。デボン紀からジュラ紀に生存した。葉身は掌状に分かれた羽小葉からなり、大胞子葉をなす小羽葉は多数の胚珠を内にくるんでいて、一つの開口があり、そこから小胞子が入りこむ。小胞子葉には四室に分かれた葯(やく)がある。この仲間は、系統上、シダ植物と裸子植物をつなぐ位置にあると考えられている。
出典 精選版 日本国語大辞典精選版 日本国語大辞典について 情報 |
<<: Khait Bai Fort - Khait Bai Fort
>>: Kakiuchi style village - Kaito toshikisonraku
Recommend
Combe-Grenal
...It is a simple structure consisting of a rough...
Chlothar II
584‐629 Merovingian king of the Franks. Reigned 58...
Maries' fir (English spelling)
...A similar phenomenon is seen in Abies mariesii...
"L'âme enchantée" (English spelling)
…During World War I, in neutral Switzerland, he c...
Tajik people - Tajik (English spelling)
An Iranian ethnic group in Central Asia. In Russia...
Gentleman's Magazine
…This magazine, edited by the writer Jean Donneau...
Frank
A Belgian-born French composer. Born in Liège to a...
Audi NSU Auto Union [company] - Audi NSU Auto Union
…(2) Germany's automobile production of 4.67 ...
Rekidaihoan - Historical Treasures
This is a collection of diplomatic documents and ...
Katia - Katia
Please see the Dia page. Source: Encyclopaedia Br...
Kore (English spelling)
A Greek word meaning "young girl." In ar...
Spaniel [species] (English spelling) spaniel
It is a bird hunting dog breed that originated in ...
Germania Superior (English spelling)
…In the second half of the 1st century, the empir...
Tororoaoi (Yellow Shu Aoi) - Tororoaoi (English spelling) sunset hibiscus
A perennial plant of the Malvaceae family native t...
Spiegel
…Leonardo da Vinci used the metaphor of a mirror ...