Dalyia is a genus of worm-like fossilized organisms found in the Walcott Quarry and Trilobite beds of the Burgess shale from the middle Cambrian.[1] Due to its branching structure, it was previously interpreted as a red alga. However further examinations in 2015 suggest they may instead be pterobranchs, a class of small tube-dwelling worms.[1] It has smooth or faintly lineated stems, which branch into up to four equal branches at branching points. 37 specimens of Dalyia are known from the Greater Phyllopod bed, where they comprise 0.07% of the community.[2]
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| Images from Walcott from fossils collected at the Burgess Shale, published in 1924. The bottom two photos are Dalyia nitens (left) and Dalyia racemata.(right) | |
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| Genus: | Dalyia Walcott, 1919
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References
edit- ^ a b Maletz, Jörg; Steiner, Michael (2015). "Graptolite (Hemichordata, Pterobranchia) preservation and identification in the Cambrian Series 3". Palaeontology. 58 (6): 1073–1107. Bibcode:2015Palgy..58.1073M. doi:10.1111/pala.12200. S2CID 129341868.
- ^ Caron, Jean-Bernard; Jackson, Donald A. (October 2006). "Taphonomy of the Greater Phyllopod Bed community, Burgess Shale". PALAIOS. 21 (5): 451–65. Bibcode:2006Palai..21..451C. doi:10.2110/palo.2003.P05-070R. JSTOR 20173022. S2CID 53646959.
External links
edit- "Dalyia racemata". Burgess Shale Fossil Gallery. Virtual Museum of Canada. 2011. Archived from the original on 2020-11-12. Retrieved 2023-01-21.
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