From Wikipedia, the free encyclopedia
Genus of marine worm-like animals
Rhabdotubus Temporal range:
Cambrian Stage 3–Middle Cambrian
Scientific classification
Kingdom:
Phylum:
Class:
Pterobranchia
Genus:
Rhabdotubus
Species
R. robustus
R. johanssoni (type)
The Lower-Middle Cambrian animal Rhabdotubus is the earliest known
pterobranch .
[1] It bears strong similarity to the
graptolites - indeed for some time it was misclassified as a dendroid graptolite.
[2]
[3]
[4]
References
^ Bengtson, S.; Urbanek, A. (1986),
"Rhabdotubus, a Middle Cambrian rhabdopleurid hemichordate" , Lethaia , 19 (4): 293–308,
doi :
10.1111/j.1502-3931.1986.tb00743.x , archived from
the original on 2012-12-16, retrieved 2009-06-06
^ Maletz, J.; Steiner, M.; Fatka, O. (2005),
"Middle Cambrian pterobranchs and the Question: What is a graptolite?" (PDF) , Lethaia , 38 (1): 73–85,
doi :
10.1080/00241160510013204 , retrieved 2009-06-06
^ Durman, P.N.; Sennikov, N.V. (1993),
"A new rhabdopleurid hemichordate from the Middle Cambrian of Siberia" (PDF) , Palaeontology , 36 : 283, retrieved 2009-06-06
^ Urbanek, A. (1994), "When is a pterobranch a graptolite?", Lethaia , 27 (4): 324,
doi :
10.1111/j.1502-3931.1994.tb01582.x