کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4750656 1642539 2010 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Euphorbiaceae: Acalyphoideae fossils from early Miocene New Zealand: Mallotus–Macaranga leaves, fruits, and inflorescence with in situ Nyssapollenites endobalteus pollen
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فسیل شناسی
پیش نمایش صفحه اول مقاله
Euphorbiaceae: Acalyphoideae fossils from early Miocene New Zealand: Mallotus–Macaranga leaves, fruits, and inflorescence with in situ Nyssapollenites endobalteus pollen
چکیده انگلیسی

An early Miocene (ca. 23 Ma) flora from the Foulden Maar diatomite deposit, Otago, southern New Zealand contains numerous organically-preserved fossil leaf compressions, flowers and fruits. A fossilised male partial lax inflorescence carrying in situ pollen of the type Nyssapollenites endobalteus (McIntyre) Kemp & Harris is assigned to Euphorbiaceae, subfamily Acalyphoideae, tribe Acalypheae. Leaves from the same site are referred to the Mallotus–Macaranga clade (Euphorbiaceae: Acalyphoideae) on the basis of leaf architecture and epidermal features and described as Malloranga fouldenensis gen. et sp. nov. In addition, euphorbiaceous trilobed capsular fruits are assigned to the form genus Euphorbiotheca as E. mallotoides sp. nov. and an immature infructescence is also described. The inflorescence, pollen, leaves and fruits blew or fell into a small enclosed maar lake and must have been derived from trees or shrubs growing around the lake margin.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Review of Palaeobotany and Palynology - Volume 163, Issues 1–2, December 2010, Pages 127–138
نویسندگان
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