TF1005 - Graptoloid graptolites

Ordovician

Phylum: Hemichordata
Class: Graptolithina
Order: Graptoloidea

Stipes
Rhabdosome
Thecae
'sawtooth'

Flattened
Red colour from iron in sediment seeping into fossil

You can see a range of geometries on this specimen: scandent, horizontal and pendent.