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E-book Manual of Leaf Architecture

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Penilaian

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One of the most critical uses of foliar characters is in interpreting the angiosperm fossil record. Although fossil reproductive structures comprise an important source of data (e.g., Friis and Skarby, 1982; Basinger and Dilcher, 1984; Herendeen et al., 1999; Crepet et al., 2004; Friis et al., 2006), compressions and impressions of leaves are the most common macroscopic angiosperm fossils. Because of their abundance, fossil leaves provide agreat deal of
information about the composition, diversity, and paleoecology of past floras (Chaney and Sanborn, 1933; MacGinitie, 1953; Burnham, 1994; Johnson and Ellis, 2002; Wang and Dilcher, 2006). Furthermore, fossil leaf morphology is widely used to produce estimates of paleoclimatic and paleoenvironmental conditions (Bailey and Sinnott, 1915, 1916; Chaney and Sanborn, 1933; Wolfe, 1971, 1995; Utescher et al., 2000; Jacobs and Herendeen, 2004). Fossil identifications, including those based on leaves, are also used to estimate divergence times of clades (e.g., Richardson et al., 2000, 2001; Renner, 2004; Davis et al., 2005; Uhl et al., 2007). Working with isolated fossil angiosperm leaves is a long-standing challenge in paleobotany. Late-nineteenth- and early-twentieth-century paleobotanists left a legacy of poorly defined taxa. Most early workers had neither an accepted lexicon for describing leaf form nor knowledge of how leaf features are distributed among living angiosperms (see discussions in Dilcher, 1973; Hill, 1982, 1988). They focused mostly on shape, size, and generalized vein characters that failed to discriminate species or even higher taxa accurately and routinely applied names of living genera to fossils from unrelated fossil genera based on poorly preserved leaves without diagnostic characters. Thus, modern workers inherited a host of misidentified fossilspecies incorrectly described as Ficus, Populus Aralia, and other modern genera.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

575.5 ELL m

Penerbit

USA : Cornell University.,

Deskripsi Fisik

201 hlm

Bahasa

English

ISBN/ISSN

2008044216

Klasifikasi

575.5

Tipe Isi

text

Tipe Media

computer

Tipe Pembawa

online resource

Edisi

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Subjek

Roots and Leaves

Info Detail Spesifik

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Pernyataan Tanggungjawab

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Versi lain/terkait

Lampiran Berkas

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