Trilobite | Gemopedia

Trilobites are remarkable, hard-shelled creatures that lived some 400 to 500 million years ago in Earth's ancient seas. Trilobites represent the single most diverse class of extinct organisms. Throughout the 270 million years they inhabited the oceans, they continued to evolve into various species, leading to a great deal of diversity in their size, form and function. This means there is a wide variety of trilobite fossils to collect! One of the most appealing factors about trilobite fossils is that you can hold and examine an entire fossil animal as you turn it about in your hand.
Colors
Brown, black, gray, pink, may be brassy if pyritized

Trilobite Classification

Common Name

Trilobite

Species

NA

Variety

Colors

Brown, black, gray, pink, may be brassy if pyritized

Alternate Names

Gemstone Groups

Key Separations

Appearance

Comments

Trilobites fossils are extinct marine arthropods. The oldest known fossils are from 521 million years ago and went extinct about 250 million years ago.

Trilobite Optical Properties

Transparency

Opaque

Refractive Index

Birefringence

Optic Character

Optic Sign

Polariscope Reaction

Fluorescence

SWUV:
LWUV:

CCF Reaction

Pleochroism

None

Dispersion

Comments

Trilobite Chemistry & Crystallography

Chemical Name

Chemical Formula

Synthesis

Crystal System

NA

Classification

Rock

Nature

Natural

Crystallinity

Aggregate

Comments

Trilobite Characteristic Physical Properties

Hardness

Streak

Specific Gravity

Toughness

Inclusions

Luster

Dull

Stability

Fracture

Cleavage

None

Comments

JTV on Google+
0 Items
My Wish List
Close
Item
Description
Qty.
Price


Estimated Order Total:
0
Total Due Today:
0
Close
Item
Description
Qty.
Price


Page of 1