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TF1004 - Horizontal didymograptid
Specimen Age
Ordovician
Location
Australia
Taxonomy
Phylum: Hemichordata
Class: Graptolithina
Class: Graptolithina
Distinctive Features
Stipes (2)
Nema
Horizontal
Thecae
Rhabdosome
Nema
Horizontal
Thecae
Rhabdosome
Preservation
Compressed
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 position of the nema tells us that there are two horizontal stipes and not one stipe. This allows identification as a Didymograptid and not as a Monograptid.