Fossils of Australiaest. 2013
Themnopora
FA-0182 · tap to enlarge

branching tabulate coral

Thamnopora sp.

Silurian427.4–419.2 Ma
Catalogue
FA-0182
Phylum
Cnidaria
Class
Anthozoa
Order
Favositida
Family
Pachyporidae
Locality
Yass district, New South Wales
Unit
not recorded
Age
Late Silurian (Ludlow–Přídolí)
427.4–419.2 Ma
Reference
Wikipedia

A tabulate coral that grew as thick, finger-like branches rather than a solid mass. Corallites open obliquely over the whole surface of each branch, so a weathered specimen is covered in small pores.

Broken branches are far more commonly found than whole colonies. Thamnopora is abundant worldwide in the Devonian and ranges back into the Silurian.

Also in this collection under the same name: FA-0152