Tetragraptus sp., Phyllograptus sp. and Didymograptus sp.

UNB-2019-0577Fossils » Eukaryote » Animalia » Hemichordata » Graptolithina

Description

Kingdom: Animalia Phylum: Hemichordata Class: Pterobranchia Subclass: Graptolithina Order: Graptoloidea Family: Phyllograptidae Genus: Tetragraptus (Salter, 1863) Kingdom: Animalia Phylum: Hemichordata Class: Pterobranchia Subclass: Graptolithina Family: Phyllograptidae Genus: Phyllograptus (Hall, 1858) Kingdom: Animalia Phylum: Hemichordata Class: Pterobranchia Subclass: Graptolithina Family: Dichograptidae Genus: Didymograptus (McCoy, 1851) Six shales with a few graptolites preserved on the surface. Two large Phyllograptus rhabdosome between two shales with one having a rhabdosome length of 15.0 mm but the distal end is broken off and the second rhabdosome has a length of 25.0 mm, with the proximal and distal end missing. The rhabdosome length of the first Phyllograptus 5.0 mm and the 2TRD is 2.0 mm. The second Phyllograptus width is 4.0 mm and 2TRD 2.5 mm. Both are scandent forms. One shale has one stipe of Didymograptus that has a width of 1.0 mm, 2TRD of 2.0 mm and the total visible length of 20.0 mm. The shale with the proximal portion of the Phyllograptus has a small stipe of Tetragraptus with a width of 0.9 mm and 2TRD is 2.5 mm.

Specifications

Object nameTetragraptus sp., Phyllograptus sp. and Didymograptus sp.
IDUNB-2019-0577
Legal statusPermanent collection
CategoryFossil
Classification
Domain:
Eukaryote
Kingdom:
Animalia
Phylum:
Hemichordata
Class:
Graptolithina
CompositionShale
Age
Eon:
Phanerozoic
Era:
Paleozoic
Period:
Ordovician
Epoch:
Lower Ordovician
Numeric age485.4 Mya
OriginNear Slemmestad, Norway
Pieces6
PartialNo
Measurements
  • 6.6cm x 3.8cm x 0.3cm
  • 5.4cm x 2.6cm x 0.4cm
  • 2.5cm x 1.3cm x 0.5cm
  • 4.2cm x 2.5cm x 0.4cm
  • 2.9cm x 1.4cm x 0.6cm
  • 4cm x 2.7cm x 0.6cm

Map of Origin