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EarthCache

The Trilobites of Skryje

A cache by Pekur Send Message to Owner Message this owner
Hidden : 10/25/2007
Difficulty:
1.5 out of 5
Terrain:
3.5 out of 5

Size: Size: not chosen (not chosen)

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Geocache Description:

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english.gifEnglish:

The Trilobites of Skryje

Skryje is one of the finding places of fossilized animals named trilobites. These are preserved in the fossil state in the earth crust to present time. Trilobite (Trilobitomorpha) represents the dead strain arthropods. The trilobites lived about 250 million years ago in the reef areas. The body of trilobite is divided into three parts: a cephalon (head), a thorax composed of freely articulating segments and a pygidium (tail). They led a benthic life as filter feeders. Some swam on the bottom of the sea and fed on plankton. Trilobites had a single pair of preoral antennae and otherwise undifferentiated biramous limbs. Each exopodite (walking leg) had six segments, analogous to those of other early arthropods. The limbs were covered by lateral projections of the exoskeleton called pleural lobes, extending outward from a central axial lobe.

This finding place thanks the works of a French geologist and palaeontologist Joachim Barrande (11.08. 1799 - 5.10. 1883). His attention was attracted to the fossils from the Lower Palaeozoic rocks of Bohemia. He worked on systematic researches on the equivalent strata in Bohemia. He made a detailed study of these rocks, engaging workmen specially to collect fossils, and in this way he obtained upwards of 3500 species of graptolites, brachiopoda, mollusca, trilobites and fishes. He laid the foundation of czech paleontology and integrated Skryje to the world-famous finding places.

And now your task:
To log this Earthcache, take a photo of yourself close to the information panel and send me the correct answers of the following questions by email (please not in the log) to kurkape@seznam.cz with subject Trilobite:

1) In what geological epoch was this trilobite locality formed?

2) Name the kinds of filtrators.

3) How is the really size of trilobite Sao hirsuta?

czech.gifCesky:

Skryjský Trilobit

Skryje jsou známé predevsím bohatými nalezišti zkamenelin živocichu nazývaných trilobiti. Tito se dochovali miliony let ve fosilním stavu, ukryté v horninách zemské kury až do dnešní doby. Trilobiti (Trilobitomorpha) predstavují vymrelý podkmen clenovcu. Objevili se v prvohorách a jednalo se o vodní zivocichy, jejichž clánkované telo bylo pokryto pancírem. Trilobiti jsou bentictí živocichové. Po dne se pohybují krácením více než plaváním. Živí se detritem, nebot nemají kusadla. Jejich telo je tvoreno hlavou s ponekud vystouplýma ocima a tremi podélnými laloky. Mají mnoho nespecializovaných dvouvetevných nohou se žábrami.

Toto nalezišti je dílem francouzkeho inženýra a paleontologa Joachima Barrande (11.8.1799 – 5.10.1883), který se celosvetove proslavil pruzkumem geologických útvaru a zkamenelin ve stredních Cechách. Barranda objev natolik ovlivnil, že studiu zkamenelin venoval zbytek svého života. Výsledkem jeho práce bylo vedle množství nasbíraného materiálu i nekolikasvazkové dílo popisující více než 3 560 druhu zkamenelin. Barrande tak položil základy ceské paleontologie a zaclenil Skryje mezi svetová nalezište fosilií.

A nyní k úkolu této earthcache:
Soucástí logu musí být Vaše fotografie u informacni tabule (viz Spoiler). Pred zalogováním (logujte až po odsouhlasení správnosti odpovedí) je nutné správne zodpovedet níže uvedené otázky a zaslat odpovedi na e-mail kurkape@seznam.cz s predmetem Trilobite:

1) Z jakého období pochází toto naleziste zkamenelin?

2) Vyjmenuj druhy filtrátoru.

3) Jaká je skutecná velikost trilobita Sao hirsuta?

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Last Updated: on 2/12/2018 10:16:16 AM (UTC-08:00) Pacific Time (US & Canada) (6:16 PM GMT)
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Coordinates are in the WGS84 datum

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