PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Protoentactinia gracilispinosa

Taxonomy

Protoentactinia gracilispinosa was named by Kozur et al. (1996). It is a 3D body fossil. Its type locality is USGS Loc. 11307-CO, Horse Heaven Mountain [Windfall Fm], which is in a Tremadoc slope limestone in the Windfall Formation of Nevada.

Year	Name and author
1996	Protoentactinia gracilispinosa Kozur
1996	Protoentactinia gracilispinosa Kozur et al. pp. 253-254 figs. pl. 2, figs. 2, 4, 5
2002	Protoentactinia gracilispinosa Won and Iams p. 30 figs. figs. 4.14-4.16
2007	Protoentactinia gracilispinosa Won et al.
2008	Protoentactinia gracilispinosa Maletz and Bruton p. 1186

Time interval	Ma	Country or state	Original ID and collection number
Franconian	497.0 - 486.85	Canada (Newfoundland and Labrador)	Protoentactinia gracilispinosa (90965 90967 90968)
Trempealeauan	490.2 - 486.85	Canada (Newfoundland and Labrador)	Protoentactinia gracilispinosa (90970 90971)
Tremadocian	486.85 - 477.1	Canada (Newfoundland and Labrador)	Protoentactinia gracilispinosa (234138 234141 234142 234143)
Tremadoc	486.4 - 477.1	USA (Nevada)	Protoentactinia gracilispinosa (type locality: 90927)