Paleonet: Dictyorhabdus priscus

Novack-Gottshall, Philip M. pnovack-gottshall at
Fri Jul 14 14:39:27 GMT 2017

Hi Ellen,

The 2004 (vol. 3, Part E, Rev.) Treatise revision still lists as a dictyosponge (p. E-374), Hexactinellida > Dictyospongioidea > Dictyospongiidae > Dictyospongiinae > Dictyorhabdus type species, but with a note that family assignment for genus is "uncertain".


On 7/14/2017 7:40 AM, Ellen Thomas wrote:
Does anyone have information on the present taxonomic standing of Dictyorhabdus priscus Walcott (1892) from the Harding Sandstone (Colorado). Walcott described this enigmatic fossil as 'notochordal sheaths' of a 'chimaerid fish'. Bashford Dean (1906) in his work on chimaerid fish said it might be a cephalopod mollusc, also citing Hyatt (1994). Flower (1952) said it was not a mollusc, but a hexactinwllid sponge.
Ellen Thomas

  Phil Novack-Gottshall, PhD
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