Zachełmie, Świętokrzyskie Voivodeship
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Zachełmie is a
village A village is a human settlement or community, larger than a hamlet but smaller than a town with a population typically ranging from a few hundred to a few thousand. Although villages are often located in rural areas, the term urban v ...
in the administrative district of Gmina Zagnańsk, within
Kielce County __NOTOC__ Kielce County () is a unit of territorial administration and local government (powiat) in Świętokrzyskie Voivodeship, south-central Poland. It came into being on January 1, 1999, as a result of the Polish local government reforms passe ...
,
Świętokrzyskie Voivodeship Świętokrzyskie Voivodeship ( ), also known as Holy Cross Voivodeship, is a voivodeship (province) in southeastern Poland, in the historical region of Lesser Poland. The province's capital and largest city is Kielce. The voivodeship takes its ...
, in south-central Poland. It lies approximately east of Zagnańsk and north-east of the regional capital
Kielce Kielce (; ) is a city in south-central Poland and the capital of the Świętokrzyskie Voivodeship. In 2021, it had 192,468 inhabitants. The city is in the middle of the Świętokrzyskie Mountains (Holy Cross Mountains), on the banks of the Silnic ...
.


Zachełmie Quarry

A former limestone quarry is located near the village. The rocks are part of the Świętokrzyskie (Holy Cross) Mountains, once on the southern coast of
Laurasia Laurasia () was the more northern of two large landmasses that formed part of the Pangaea supercontinent from around ( Mya), the other being Gondwana. It separated from Gondwana (beginning in the late Triassic period) during the breakup of Pa ...
, and have yielded 395-million-year-old fossil footprints of
tetrapod A tetrapod (; from Ancient Greek :wiktionary:τετρα-#Ancient Greek, τετρα- ''(tetra-)'' 'four' and :wiktionary:πούς#Ancient Greek, πούς ''(poús)'' 'foot') is any four-Limb (anatomy), limbed vertebrate animal of the clade Tetr ...
s. These are believed to be the oldest tracks of four-legged animals known to
palaeontologist Paleontology, also spelled as palaeontology or palæontology, is the scientific study of the life of the past, mainly but not exclusively through the study of fossils. Paleontologists use fossils as a means to classify organisms, measure geolo ...
s, pushing back their estimated
evolution Evolution is the change in the heritable Phenotypic trait, characteristics of biological populations over successive generations. It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, re ...
by more than 18 million years. The finding also suggests that the first vertebrates to walk on land may have evolved in marine
tidal flat Mudflats or mud flats, also known as tidal flats or, in Ireland, slob or slobs, are coastal wetlands that form in intertidal areas where sediments have been deposited by tides or rivers. A global analysis published in 2019 suggested that tidal ...
s or
lagoon A lagoon is a shallow body of water separated from a larger body of water by a narrow landform, such as reefs, barrier islands, barrier peninsulas, or isthmuses. Lagoons are commonly divided into ''coastal lagoons'' (or ''barrier lagoons'') an ...
s, likely dining on animals washed up with the tides, rather than in
freshwater Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. The term excludes seawater and brackish water, but it does include non-salty mi ...
habitats.


References

Villages in Kielce County {{Kielce-geo-stub