Marsupites

Marsupites Temporal range: Santonian ~86.3–83.6 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Marsupites testudinarius fossil
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Subphylum:	Crinozoa
Class:	Crinoidea
Order:
Genus:	Marsupites
Species
M. americanus Springer 1911 M. lamberti Besairie 1936 M. testudinarius Schlotheim 1820

Marsupites is an extinct genus of crinoids from the Santonian stage of the Late Cretaceous.^[1]

Biostratigraphic significance[]

The International Commission on Stratigraphy (ICS) has assigned the extinction of Marsupites testudinarius as the defining biological marker for the start of the Campanian stage of the Late Cretaceous, 83.6 ± 0.2 million years ago.

Distribution[]

Fossils of the genus have been found in:^[1]

• Lipnik, Poland^[2]
• Haslam Formation, British Columbia, Canada^[3]

References[]

Bibliography[]

• Haggart, J. W., and R. Graham. 2018. The crinoid Marsupites in the Upper Cretaceous Nanaimo Group, British Columbia: resolution of the Santonian-Campanian boundary in the North Pacific Province. Cretaceous Research 87. 277–295.
• Lach, R., and M. A. Salamon. 2016. Late Cretaceous crinoids (Echinodermata) from the southwestern margin of the Holy Cross Mts. (southern Poland) and phylogenetic relationships among bourgueticrinids. Palaeontologische Zeitschrift 90. 503–520.
• Fossils (Smithsonian Handbooks) by David Ward (Page 173)

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