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<p>A new fossil genus and species <i>Palaeoasterolibertia siwalika</i> (<i>Ascomycota, Asterinaceae</i>) is proposed for a fungus with circular thyriothecia and intercalary appressoria associated with a compressed leaf of <i>Neolamarckia pliocadamba</i> (<i>Rubiaceae</i>) from the middle Siwalik sediments (Upper Miocene to Lower Pliocene, ~3.8 to 6&#xa0;Ma) of Bhutan Himalaya. The morphology of the fossil fungus, particularly the intercalary appressoria, exhibits closest resemblance with modern <i>Asterolibertia nothopegiae</i> colonizing <i>Nothopegia aureofulva</i> (<i>Anacardiaceae</i>).</p>

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Fossil Asterinaceae with intercalary appressoria from the Neogene of Bhutan Himalaya

  • 期刊论文

  • 发表日期：

    2025年9月15日

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  • Meghma Bera,
  • Shreyasi Basak,
  • Ranita Biswas,
  • Dipak Kumar Paruya,
  • Roland Kirschner,
  • Subir Bera

摘要

A new fossil genus and species Palaeoasterolibertia siwalika (Ascomycota, Asterinaceae) is proposed for a fungus with circular thyriothecia and intercalary appressoria associated with a compressed leaf of Neolamarckia pliocadamba (Rubiaceae) from the middle Siwalik sediments (Upper Miocene to Lower Pliocene, ~3.8 to 6 Ma) of Bhutan Himalaya. The morphology of the fossil fungus, particularly the intercalary appressoria, exhibits closest resemblance with modern Asterolibertia nothopegiae colonizing Nothopegia aureofulva (Anacardiaceae).