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Gironde · France

Saucats-Léognan Geological Reserve (Aquitaine, France)

Guided / club only📚 Compiled from public sources

The European reference Miocene marine site, just south of Bordeaux. A protected geological reserve with public guided walks through Aquitanian and Burdigalian shell beds that yield small shark teeth, ray plates, and beautiful invertebrates.

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Geology
FormationsAquitanian sands, Burdigalian shelly limestones
EpochsMiocene
Age~23-16 million years
Star speciesIsurus retroflexus, Carcharias spp., Hemipristis serra (small)
Technique

Join a Reserve-led visit to the Pont-Pourquey or Lassime stratotype outcrops. Surface collecting is by permit only on designated visit days.

Access

Réserve Naturelle Géologique de Saucats-Léognan visitor centre, ~25 km south of Bordeaux. Guided walks Apr-Oct; book ahead.

Legality & ethics

Surface collecting only with the Reserve guide and only on designated outcrops. No digging into protected sections.

Hazards
  • Slippery streambeds
  • Brambles around outcrops
Insider tips
  • Pair with a Bordeaux food/wine weekend — the Reserve is half-day max
  • The Pont-Pourquey stratotype is the iconic stop for invertebrates
  • French paleontology clubs sometimes co-host extra collection days
References & further reading

Shark teeth findable here

Trophy = headline find · Rare = real score · Uncommon = some trips · Common = most trips.

Also findable here

The beachcomber's bonus round — what else the geology gives up.

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