User:Hazen22a/sandbox
Archaeonassa[edit]
Late Ediacaran Archaeonassa-type trace fossils are commonly preserved on the top surfaces of sandstone strata. [1] "Archaeonassa is a poorly known ichnogenus, originally described from the Cambrian of North America, which is a member of the Scolicia ’group’, but can be regarded as distinct from Scolicia"[2] Its know for being produced by invertebrates like arthropods and mollusks. Archaeonassa are a certain type of Cambrian trace fossil and are also shown as burrows. They are twisted about and are irregular in form.[3] "The flanking ridges are very well developed, and locally display an undulating morphology. In cross-sectional view the median groove commonly displays a V-shaped morphology."[1] They were origanlly compared to a base model but scientist found that they fell into a "taxonomic grey zone concerning its availability"[4]
- ^ a b "Archaeonassa fossulata". fossiilid.info. Retrieved 2019-12-02.
- ^ Buckman, James Oliver (February 1994). "Fenton and Fenton 1937 Reviewed". Research Gate.
{{cite web}}: CS1 maint: url-status (link) - ^ Fenton, Carroll Lane; Fenton, Mildred Adams (1937). "Archaeonassa: Cambrian Snail Trails and Burrows". The American Midland Naturalist. 18 (3): 454–456. doi:10.2307/2420587. ISSN 0003-0031.
- ^ "Archaeonassa Fenton and Fenton 1937 reviewed". Taylor Francis Online. December 7th, 2008.
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