Sabalites (English spelling)

Japanese: サバリテス（英語表記）Sabalites

A fossil of the monocotyledonous plant Sabal , a genus in the palm family. About 20 extant species are known to be evergreen shrubs or trees, distributed along the coasts of the West Indies and the warm tropical regions of Central and South America. The leaves grow terminally, forming a crown, fan-shaped, and deeply palmately lobed into numerous leaflets. The leaflets have parallel veins running vertically, long petioles, and their tips extend thinly into the leaf blade. Fossil species have been found from the Cretaceous onwards, and in the Paleogene they grew in temperate regions much further north than their current distribution. In Japan, they are abundant in Paleogene coal-bearing seams, especially the Eocene, from Hokkaido to Kyushu.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

単子葉植物のヤシ科クマデヤシ属Sabalの化石で，葉の形態属名。現生種は常緑性の低木または高木の約20種が知られ，西インド諸島，中南米暖熱帯地方などの海岸に分布する。葉は頂生し樹冠を作り，扇状で多数の小葉に掌状深裂する。小葉には平行脈が縦走し，葉柄は長く，その先端は細長く延びて葉身に入る。化石種は白亜紀以降に見いだされ，古第三紀には現在の分布よりもかなり北方の温帯地域まで生育していた。日本では北海道から九州まで各地の古第三紀含炭層，とくに始新統から多産する。

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

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