Oldest reptile fossils

According to Official Guinness Records,

The Joggins Fossil Cliffs are a 15 km-long stretch of cliffs on the Bay of Fundy, Canada, that represent the richest and most comprehensive record of life in the Carboniferous geological period, from around 354-290 million years ago. It contains fossil remains of 148 species across three distinct ecosystems (estuarine bay, floodplain rainforest and fire prone forested alluvial plain with freshwater pools). Species discovered here include Hylonomus which, at around 315 million years old, remains the oldest confirmed reptile on Earth.

For a complete list of 2010 records, please visit 2010 Guinness Records in Canada.

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