<![CDATA[1A Collections]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/browse?tags=urchin&output=rss2 Tue, 09 Apr 2024 21:16:31 +0100 p1acollections@esc.cam.ac.uk (1A Collections) Zend_Feed http://blogs.law.harvard.edu/tech/rss <![CDATA[TF0907 Regular echinoid]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/137

Title

TF0907

Regular echinoid

Description

Stratigraphic Range

Modern

Taxonomy

Phylum: Echinodermata
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

Preservation

Original shell material
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.
TF0907_HS.png
TF0907_sketch.png
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