A new species of rust fungi from the middle Eocene Sakhalinian amberстатья
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Аннотация:Nyssopsora eocaenica Tykhonenko and Hayova sp. nov., the
only fossil species of the genus Nyssopsora (Pucciniales),
is described from the middle Eocene Sakhalinian amber
(Russian Far East). It differs from the other known representatives
of the genus by the presence of unbranched
hooked appendages on the surface of teliospores. The
spores are embedded in the amber sample in close proximity
to a syninclusion, Heterotrissocladius naibuchi (Diptera,
Chironomidae); most of them are clinged to the insect’s
wing or entangled in the bristles on its legs and body. This
fossil is ca. 45 myr old and provides useful information for
future phylogeny-based calibration and dating of the rust
fungi.