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Showing results for tags 'tremataspis'.
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I found this concretion in what I believe to be Lockport dolostone, which is silurian in age. At first I didn't think much of it but then I noticed the surface has a faint texture of cracked shell. I was wondering if this could be a silurian ostracoderm like Tremataspis?
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- lockport dolostone
- ontario
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From the album: Vertebrates
Tremataspis mammillata PATTEN, 1931 Silurian Wenlock - Ludlow Saaremaa Estonia Length 3cm-
- osteostraci
- saaremaa
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From the album: Vertebrates
Tremataspis schmidti ROHON, 1892 Upper Silurian Island of Oesel Estonia Length 2,5cm / 1" -
Taxonomy according to GBIF.org Reconstruction by Patten, 1903, p. 237: Life reconstruction own work by Tamura By Nobu Tamura email:nobu.tamura@yahoo.com http://spinops.blogspot.com/ http://paleoexhibit.blogspot.com/ - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=50279652 Identified by oilshale using Patten, 1902. References: Patten, William (1902) On the Structure and Classification of the Tremataspidæ. The American Naturalist Vol. 36, No. 425 (May, 1902), pp. 379-393. Patten, William (1903) On the Appendages of Tremataspis. The American Naturalist, Vol. 37, No. 436, pp. 223-242. Published by: The University of Chicago Press for The American Society of Naturalists. Denison, Robert H. (1947) The exoskeleton of Tremataspis. Am. J. Sci. 245: 337-365. Märss, T., Afanassieva, O. and Blom, H. (2014) Biodiversity of the Silurian osteostracans of the East Baltic. Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 105, pp 73-148. doi:10.1017/S1755691014000218 O'Shea, J., Keating, J. N. and Donoghue, P. (2019) The dermal skeleton of the jawless vertebrate Tremataspis mammillata (Osteostraci, stem-Gnathostomata). Journal of Morphology. 1–27. Bremer, O., Qu, Q., Sanchez, S., Märss, T., Fernandez, V., Blom, H. (2021) The emergence of a complex pore‐canal system in the dermal skeleton of Tremataspis (Osteostraci). Journal of Morphology 282, 8, 1141-1157. DOI:10.1002/jmor.21359
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- estonia
- ostracoderm
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