Rare Urasterella in Matrix – Bromide Formation, Criner Hills, Oklahoma

Rare Urasterella in Matrix | Ordovician | Bromide Formation, Criner Hills, Oklahoma

An exceptional and rare Urasterella (ancient brittle star / ophiuroid) preserved in its original matrix, sourced from the Bromide Formation at Pooleville, Criner Hills, Oklahoma. Dating to the Blackriveran Stage of the Late Ordovician (~450 million years ago), this is one of the earliest known starfish-like echinoderms ever recovered — a genuine rarity in the fossil world.

Provenance

• Species: Urasterella sp.
• Period: Late Ordovician – Blackriveran Stage (~450 Ma)
• Formation: Bromide Formation
• Location: Pooleville, Criner Hills, Oklahoma, USA
• Preservation: In matrix

The Bromide Formation is one of North America's most significant Ordovician fossil sites, celebrated for yielding diverse and beautifully preserved marine invertebrates. Urasterella specimens of this quality are exceptionally scarce and represent a remarkable opportunity for serious collectors of Palaeozoic life.