Pre-order

Sand Dollar Fossil

$2.00

Spend $50.00 for Free Shipping in the US
INFORMATION
TIME SCALE
CUSTOMER REVIEWS
PRODUCT INFORMATION

WHAT IS IT

You’ve probably seen sand dollars used as beach décor, but what you’re holding is a little more extraordinary. This Holeclypus fossil would have buried itself in the low-tide mud of the Jurassic period 145–200 million years ago, sharing the same waters as the plesiosaur and ichthyosaur. Notice the fivefold symmetrical “flower” shape on its skeleton—the “petals” being the imprint of tube feet the creature uses for respiration.

INTERESTING PROPERTIES

• When alive, this sand dollar would be covered in colorful, velvety spines that it uses for mobility.
• Sand dollars are closely related to sea urchins and this fossil would have lived around the time when the two genera diverged.

USES

• Add this fossil from Madagascar to your collection and use it to upstage all your friends who return from their boring beach vacations. They have a sunburn. You have a fossil.

TIME SCALE

This table contains the geological time periods of the past 2.5 billion years on Earth to aid in understanding age immense age of these fossils.

(Ma = Mega-annum = 1,000,000 years)
EON ERA PERIOD EXTENT (Ma) DURATION (Ma)
Phanerozoic Cenozoic Quaternary 2.588–Present 2.588+
Neogene 23.03–2.588 20.4
Paleogene 66.0–23.03 42.9
Mesozoic Cretaceous 145.5–66.0 79.5
Jurassic 201.3–145.0 56.3
Triassic 252.17–201.3 50.9
Paleozoic Permian 298.9–252.17 46.7
Carboniferous 358.9–298.9 60
Devonian 419.2–358.9 60.3
Silurian 443.4–419.2 24.2
Ordovician 485.4–443.4 42
Cambrian 541.0–485.4 55.6
Proterozoic Neoproterozoic Ediacaran 635.0–541.0 94
Cryogenian 850–635 215
Tonian 1,000–850 150
Mesoproterozoic Stenian 1,200–1,000 200
Ectasian 1,400–1,200 200
Calymmian 1,600–1,400 200
Paleoproterozoic Statherian 1,800–1,600 200
Orosirian 2,050–1,800 250
Rhyacian 2,300–2,050 250
Siderian 2,500–2,300 200
CUSTOMER REVIEWS
Sand Dollar Fossil

Sand Dollar Fossil

$2.00
Pre-loader