Douglasocaris

Douglasocaris Temporal range: Middle Ordovician (Darriwilian), 460  Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Holotype of Douglasocaris collinsi, from the Douglas Lake Member of Lenoir Limestone, at Douglas Dam, Tennessee. [1]
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Malacostraca
Family:	† Douglasocaridae Caster & Brooks, 1956
Genus:	† Douglasocaris Caster & Brooks, 1956
Species:	†D. collinsi
Binomial name
†Douglasocaris collinsi Caster & Brooks, 1956 [1]

Douglasocaris is a genus of bivalved malacostracan, sometimes classified instead as either a phyllocarid or a notostracan, ^[2] from the Middle Ordovician (Darriwilian, 460 million years old) Douglas Lake Member of the Lenoir Limestone from Douglas Dam Tennessee. ^[3]

Its type and only species is Douglasocaris collinsi.

Type specimen of Douglasocaris collinsi

Counterpart of type specimen of Douglasocaris collinsi'

References

1. Caster, Kenneth E.; Brooks, H. K. (1956). "New fossils from the Canadian-Chazyan (Ordovician) hiatus in Tennessee". Bulletins of American Paleontology. 36 (157): 157–199 [182].
2. Briggs, Derek E.G.; Liu, Huaibao P.; McKay, Robert M.; Witzke, Brian J. (November 2015). "Bivalved arthropods from the Middle Ordovician Winneshiek Lagerstätte, Iowa, USA" (PDF). Journal of Paleontology. 89 (6): 991–1006. Bibcode:2015JPal...89..991B. doi:10.1017/jpa.2015.76. ISSN   0022-3360. S2CID   129986104.
3. Retallack, Gregory J. (2019). "Ordovician land plants and fungi from Douglas Dam, Tennessee". The Palaeobotanist. 68 (1–2): 173–205. doi: 10.54991/jop.2019.43 .