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TF1002 - Graptoloid graptolite
Specimen Age
Ordovician
Location
Australia
Stratigraphic Range
Ordovician
Taxonomy
Phylum: Hemichordata
Class: Graptolithina
Order: Graptoloidea
Class: Graptolithina
Order: Graptoloidea
Distinctive Features
Thecae
Stipes
Rhabdosome
Nema
Stipes
Rhabdosome
Nema
Preservation
Flattened
Carbon film
Red colour from iron in sediment seeping into fossil
Carbon film
Red colour from iron in sediment seeping into fossil
Advanced notes
The number of stipes decreased over time, from 4 to 3 to 2. This specimen has 3 stipes, placing it between four stiped animals such as Tetragraptus and two stiped animals such as Didymograptus in time.