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Nuvola filesystems services.png Quote of the day for October 25, 2016
The early bird might get the worm, but the second mouse gets the cheese. -- Unknown

On this beautiful day of

04:26 UTC
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Picture of the day
Banknotes of the Czechoslovak koruna (1919)

A 20-korun banknote from the first issue of the Czechoslovak koruna, the national currency of Czechoslovakia from 1919 to 1939 and from 1945 to 1993. The issue, which consisted of denominations of 10, 20, 50, 100 and 1000 korun, used banknotes of the Austro-Hungarian Bank to which adhesive stamps equal to 1/100 the value of the note were affixed.

See another banknote: 10 korun, 50 korun, 100 korun, 1,000 korun

Banknote: Austro-Hungarian Bank and the First Republic of Czechoslovakia; image courtesy of the National Numismatic Collection
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Today's and yesterday's featured pictures


Dendrogramma is a monotypic genus of siphonophore identified in 2014 from a collection of specimens gathered in 1986. Although specimens were at first identified as two species, D. enigmatica and D. discoides, these were later shown to represent varieties of a single species. When Dendrogramma was first discovered, it was speculated that the genus could not be classified into any existing phylum. However, examination of RNA material identified it as a siphonophore in 2016. The specimens are presumed to represent parts (bracts) of a larger organism whose entire morphology is unknown.

This diagram, depicting the holotype, was included in the article which first described Dendrogramma.

Photograph: Jean Just, Reinhardt Møbjerg Kristensen, and Jørgen Olesen

Gulf fritillary

A pair of gulf fritillaries (Agraulis vanillae) mating. The gulf fritillary is a bright orange butterfly of the family Nymphalidae and subfamily Heliconiinae, found along their migration route, ranging from Argentina in the south to upper California in the north.

Photograph: MrX; edits: Gwillhickers, Crisco 1492

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