Tremataspis mammilata Patten, 1931

Taxonomy

Ostracoderm ("shell-skinned")

Kingdom: Animalia
Phylum: Chordata
Class: Cephalaspidomorphi
Order: Tremataspidiformes
Family: Tremataspidae Schmidt 1866
Genus: Tremataspis
Species: Tremataspis mammillata
Author Citation Patten 1931

Geological Time Scale

Eon: Phanerozoic
Era: Paleozoic
Period: Silurian
Sub Period: None
Epoch: Wenlock
International Age: Homerian

Stratigraphy

Rootsiküla (Regional) Formation
Viita Member

Biostratigraphy

Paralogania martinssoni Zone

Provenance

Acquired by: Purchase/Trade

Dimensions

Length: 5 cm

Location

Viita Quarry
Saare
Saaremaa Island
Estonia

• estonia
• ostracoderm
• rootsiküla
• saaremaa
• silurian
• tremataspis

Comments

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