Mexican Fire Agate

Fire Agate : What is fire agate? How fire agate is...

100 million-year-old amber piece with lizard leg and mycomycete (arrow).

100 million years in amber: Researchers discover oldest fossilized slime mold

The skull of the juvenile T. rex, "Jane", was slender with knife-like teeth, having not yet grown big enough to crush bone.

Researchers learn more about teen-age T. rex

Fossil cast of a fin from a juvenile Sauripterus taylori, a late Devonian fish with primitive features of tetrapods.

How fish fins evolved just before the transition to land

The cruise is led by Ursula Röhl of MARUM (left) and Debbie Thomas of Texas A&M University (right). They are supported by the Expedition Project Manager Laurel Childress.

International team starts on drilling expedition

seismogram

Magnitude of Great Lisbon Earthquake may have been lower than previous...

Gachala Emerald.

Gachalá Emerald : One of the most valuable and famous emeralds...

Coyamito Agate Pseudomorph aka pretty rock.

Types of Agate : What are the different types of agate?

Exceptional and very rare Oregon opals with precious color play.

Opals in Oregon : Where to Find Opals in Oregon?

Pinfire Pattern Cantera Opal.

Cantera Opal : What is Cantera Opal ? How Cantera Opal...

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