Pristograptus sp.?
UNB-2019-0591Fossils » Eukaryote » Animalia » Hemichordata » Graptolithina
Description
Kingdom: Animalia
Phylum: Hemichordata
Class: Pterobranchia
Subclass: Graptolithina
Order: Graptoloidea
Family: Monograptidae
Genus: Pristograptus (Jaekel, 1889)
One large prominent Pristograptus rhabdosome. Proximal 2TRD is 1.8 mm that increases to 1.9 mm mesially. Rhabdosome width is 1.2 mm proximally that decreases to 1.0 mm mesially. Distal end and sicula unknown. Thecae have no dorsal hoods and have an inclined prothecal ventral wall. Slight thecal overlap.
Original catalogue suggested Monograptus cf. tumescens, but this graptolite appears to have not dorsal hoods and most likely belongs to another genus, such as Pristograptus.
Specifications
| Object name | Pristograptus sp.? |
|---|---|
| ID | UNB-2019-0591 |
| Legal status | Permanent collection |
| Category | Fossil |
| Classification | Domain: Eukaryote Kingdom: Animalia Phylum: Hemichordata Class: Graptolithina |
| Composition | Shale |
| Age | Eon: Phanerozoic Era: Paleozoic Period: Silurian Epoch: Wenlock |
| Numeric age | 433.4 Mya |
| Origin | Kingsclear, New Brunswick, Canada |
| Pieces | 1 |
| Partial | No |
| Measurements |
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