- Home
- Rocks
- Type fossils
- Fossil Specimens
- Minerals
- Glossary
- Stratigraphic Chart
- Michel-Levy Chart
- Classification of igneous rocks
- University of Cambridge
- Department of Earth Sciences
- ESC Library
- Moodle
- Sedgwick Museum
- DoITPoMS
- Mindat.org
- Microfossils
- Bryozoans
- Webmineral
- Tree of Life
- CrystalMaker
- Virtual Microscope
TF0907 - Regular Echinoid
Stratigraphic Range
Modern
Taxonomy
Phylum: Echinodermata
Class: Echinoidea
Subclass: Regularia
Class: Echinoidea
Subclass: Regularia
Distinctive Features
Pentaradial symmetry
Anus and peristome in line
Spine attachments
Ambulacra
Attachments for the jaw apparatus visible on the inside of the peristome
Anus and peristome in line
Spine attachments
Ambulacra
Attachments for the jaw apparatus visible on the inside of the peristome
Preservation
Original shell material
Jaw apparatus disarticulated
Soft parts removed
Jaw apparatus disarticulated
Soft parts removed
Advanced notes
Look at the colour of the shell and compare it to the permineralised specimens. Colour is almost always lost in the fossilisation process, even when the preservation looks to be near-perfect.