Ectenocrinus simplex Hall 1847

Taxonomy

Crinoid

Kingdom: Animalia
Phylum: Echinodermata Klein 1754
Class: Crinoidea Miller 1821
Order: Homocrinida Ausich 1998
Family: Homocrinidae Kirk 1914
Genus: Ectenocrinus
Species: Ectenocrinus simplex
Author Citation Hall 1847

Geological Time Scale

Eon: Phanerozoic
Era: Paleozoic
Period: Ordovician
Sub Period: None
Epoch: Late
International Age: Katian

Stratigraphy

Trenton Group
Neuville Formation

Provenance

Acquired by: Purchase/Trade

Dimensions

Length: 2 cm

Location

Saint-Joachim quarry
Quebec
Ontario
Canada

• ectenocrinus
• quebec
• neuville fm
• ordovician
• ontario
• tff-oilshale-ec2733

Comments

Taxonomy from Fossilworks.com.
Synonym Ectenocrinus canadensis Billings 1857.
Ectenocrinus simplex can be well recognized by its distinctive trimeric columnals.
References:
Hall, J. (1847). Containing descriptions of the organic remains of the lower division of the New York system (equivalent of the Lower Silurian rocks of Europe). Paleontology of New York 1:1-338.
Titus, R. (1989). Clinal Variation in the Evolution of Ectenocrinus simplex. Journal of Paleontology Vol. 63, No. 1 (Jan., 1989), pp. 81-91.
Warn, J. and Strimple, H. L. (1977). The disparid inadunate superfamilies Homocrinacea and Cincinnaticrinacea (Echinodermata, Crinoidea), Ordovician-Silurian, North America (Bulletins of American Paleontology, 72, 138 p.
H. Alghaled (2019). An Upper Ordovician faunal assemblage from the Neuville Formation of Québec, including an exceptionally preserved soft bodied sea anemone, Paleocerianthus neuvillii n. sp., Université de Montréal. MSc. thesis.