NATURE CONCERTHALL | 2014 : Asterolepis ornata
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2014 : Asterolepis ornata

Armoured fish

Placoderms are a group of extinct fishes which existed from the beginning of the Silurian period (around 433 million years ago) until the end of the Devonian period (359 million years ago). The antiarch fish, a group of fish to which our hero Asterolepis ornata belongs, is characterized by elongated trunk armour and pectoral fin covered by armour plates. Our hero can be found in the silt of the river Gauja and Lode in Latvia and Estonia, in the Šventoji formation in Lithuania, as well as in the north-western part of Russia – in the regions of Leningrad and Vologda. The best fossils – completely intact skeletons – were found in the clay of the Lode formation in the Lode (Liepa) clay pit. The Antiarchs had a difficult life – they were very slow (one cannot get far with heavy armour and scales), bad swimmers who relied more on their heavy armour than their skills to swim. Judging by the structure of their jaws, they were peaceful fish that survived from the nutrients they could find in the bed of the rivers and just above. The last antiarchs died out at the very end of the Devonian period – not leaving behind any ancestors.

varonis2014

09.08.2014
Venue: Balonu meadow, Sigulda

From 18:00
Interactive workstations

From the moment of twilight
Nature symphony “Devons. Asterolepis ornata”

SCIENCE: Ervīns Lukševičs un Dabas aizsardzības pārvalde
PRODUCER:
 Roberts Rubīns
SCENOGRAPHER: Didzis Jaunzems
MUSIC: Aigars Voitišķis, Andris Sējāns, Ingus Ulmanis, Kaspars Tobis, Reinis Sējāns, Valdis Muktupāvels, Anrijs Grinbergs, Jekaterina Šarigina, Raimonds Petrasuskis, Artis Orubs and the Devonian orchestra.

ervins-luksevics

ERVĪNS LUKŠEVIČS

Paleontologist with 30 years’ experience, researcher of ancient Devonian fish and first tetrapods on a global scale, University of Latvia professor.

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guntis-stikulis

ĢIRTS STINKULIS

Ģirts Stinkulis is associated professor at the Department of Geology, Faculty of Geography and Earth Sciences, University of Latvia. He teaches courses on deposits and their sedimentary environments, geology.

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Didzis-jaunzems

DIDZIS JAUNZEMS

Architect and urban planner, founder of the architecture practice DJA, based in Riga. Didzis has studied and gained practical experience of architecture and urban planning in Latvia, Norway and Italy. Likewise he has participated in architectural summer schools in The Netherlands and Finland, workshops in India, China and Switzerland, as well as various architectural competitions around the Europe.

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