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| image = Syndyoceras cooki (fossil mammal) (Marsland Formation, Middle Miocene; near Agate, Nebraska, USA) 2 (32708793602).jpg
| image = Syndyoceras cooki (fossil mammal) (Marsland Formation, Middle Miocene; near Agate, Nebraska, USA) 2 (32708793602).jpg
| caption = Fossil mammal from the Marsland Formation (Middle [[Miocene]]; [[Nebraska]])
| caption = Fossil mammal from the Marsland Formation (Middle [[Miocene]]; [[Nebraska]])
| type = [[Formation (stratigraphy)|Formation]]
| type = [[Geological formation]]
| age = [[Neogene]]
| age = [[Neogene]]
| prilithology =
| prilithology =
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| namedfor =
| namedfor =
| namedby =
| namedby =
| region = [[Nebraska]]
| region = {{Flag|Nebraska}}
| country = [[United States]]
| country = {{Flag|United States}}
| coordinates =
| coordinates =
| unitof =
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The '''Marsland Formation''' is a [[Formation (geology)|geologic formation]] in [[Nebraska]]. It preserves [[fossils]] dating back to the [[Neogene]] [[Period (geology)|period]].
The '''Marsland Formation''' is a [[Formation (geology)|geologic formation]] in [[Nebraska]]. It preserves [[fossils]] dating back to the [[Neogene]] [[Period (geology)|period]].

==Fossil content==
{{Paleobiota-key-compact}}

===Mammals===
====Ungulates====
{| class="wikitable" align="center"
|-
! colspan="6" align="center" | '''[[Ungulate]]s reported from the Marsland Formation'''
|-
! Genus !! Species !! Presence
!'''Material'''!! Notes !! Images
|-
| ''[[Mediochoerus]]''
|''M. johnsoni''
| [[Dawes County, Nebraska]] (upper part of the formation).<ref name=":0">{{Cite journal |last1=Schultz |first1=C. Bertrand (Charles Bertrand) |last2=Falkenbach |first2=Charles H. |date=1941 |title=Ticholeptinae : a new subfamily of oreodonts. |url=https://digitallibrary.amnh.org/handle/2246/379 |journal=Bulletin of the AMNH |language=en-US |volume=79 |issue=1 |pages=4–105|hdl=2246/379 }}</ref>
|A skull<ref name=":0" />
| A [[Merycoidodontidae|merycoidodontid]].
|
|-
| rowspan="3" |''[[Menoceras]]''
|''M. barbouri''
|[[Morrill County, Nebraska|Morrill]] & [[Box Butte County, Nebraska|Box Butte]] counties, Nebraska.<ref name=":1">{{Cite journal |last=Tanner |first=Lloyd |date=1972-07-01 |title=A New Species of Menoceras from the Marsland Formation of Nebraska |url=https://digitalcommons.unl.edu/museumbulletin/116 |journal=Bulletin of the University of Nebraska State Museum}}</ref><ref name=":3">{{Cite journal |last=Tanner |first=Lloyd |date=1969-01-01 |title=A New Rhinoceros from the Nebraska Miocene |url=https://digitalcommons.unl.edu/museumbulletin/52 |journal=Bulletin of the University of Nebraska State Museum}}</ref>
|Skulls.<ref name=":1" /><ref name=":3" />
|A [[rhinoceros]].
|[[File:Menoceras NT small.jpg|center|150 px]]
|-
|style="background:#E6E6E6;"|''M. falkenbachi''
|style="background:#E6E6E6;"|[[Morrill County, Nebraska]] (lower part of the formation).<ref name=":1" />
|style="background:#E6E6E6;"|Skulls.<ref name=":1" />
|style="background:#E6E6E6;"|Synonymized with ''M. barbouri''.<ref name=":4">{{Cite book |last=Prothero |first=Donald R. |url=https://books.google.com/books?id=yXhHCt8Ml7YC&dq=menoceras+marslandensis&pg=PA19 |title=The Evolution of North American Rhinoceroses |date=2005-03-07 |publisher=Cambridge University Press |isbn=978-0-521-83240-3 |pages=62 |language=en}}</ref>
|style="background:#E6E6E6;"|[[File:Menoceras barbouri (fossil rhinoceros) (Marsland Formation, Middle Miocene; Bridgeport Quarries, near Bridgeport, Nebraska, USA) 1 (32849205355).jpg|center|150 px]]
|-
|style="background:#E6E6E6;"|''M. marslandensis''
|style="background:#E6E6E6;"|[[Box Butte County, Nebraska]] (upper part of the formation).<ref name=":3" />
|style="background:#E6E6E6;"|Skulls.<ref name=":3" />
|style="background:#E6E6E6;"|Synonymized with ''M. barbouri''.<ref name=":4" />
|style="background:#E6E6E6;"|[[File:Menoceras barbouri (fossil rhinoceros) (Marsland Formation, Middle Miocene; Bridgeport Quarries, near Bridgeport, Nebraska, USA) 5 (32808353546).jpg|center|150 px]]
|-
|}

===Reptiles===
====Testudines====
{| class="wikitable" align="center"
|-
! colspan="6" align="center" | '''[[Testudine]]s reported from the Marsland Formation'''
|-
! Genus !! Species !! Presence
!'''Material'''!! Notes !! Images
|-
| ''[[Macroclemys]]''
|''M. schmidti''
| [[Box Butte County, Nebraska]].<ref name=":2">{{Cite journal |last=Whetstone |first=Kenneth N. |date=1978 |title=Additional Record of the Fossil Snapping Turtle Macroclemys schmidti from the Marsland Formation (Miocene) of Nebraska with Notes on Interspecific Skull Variation within the Genus Macroclemys |url=https://www.jstor.org/stable/1443841 |journal=Copeia |volume=1978 |issue=1 |pages=159–162 |doi=10.2307/1443841 |jstor=1443841 |issn=0045-8511}}</ref>
|A fragmentary juvenile skull & an adult skull.<ref name=":2" />
| A [[Snapping Turtle|snapping turtle]].
|
|-
|}


==See also==
==See also==
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==References==
==References==
{{Reflist}}
* {{cite web|title= Fossilworks: Gateway to the Paleobiology Database|author= Various Contributors to the Paleobiology Database|url= http://www.fossilworks.org/cgi-bin/bridge.pl?action=home|access-date= 17 December 2021}}
* {{cite web|title= Fossilworks: Gateway to the Paleobiology Database|author= ((Various Contributors to the Paleobiology Database))|url= https://www.fossilworks.org|access-date= 17 December 2021}}


[[Category:Neogene geology of Nebraska]]
[[Category:Neogene geology of Nebraska]]

Latest revision as of 08:04, 18 November 2024

Marsland Formation
Stratigraphic range: Neogene
Fossil mammal from the Marsland Formation (Middle Miocene; Nebraska)
TypeGeological formation
Location
Region Nebraska
Country United States

The Marsland Formation is a geologic formation in Nebraska. It preserves fossils dating back to the Neogene period.

Fossil content

[edit]
Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Mammals

[edit]

Ungulates

[edit]
Ungulates reported from the Marsland Formation
Genus Species Presence Material Notes Images
Mediochoerus M. johnsoni Dawes County, Nebraska (upper part of the formation).[1] A skull[1] A merycoidodontid.
Menoceras M. barbouri Morrill & Box Butte counties, Nebraska.[2][3] Skulls.[2][3] A rhinoceros.
M. falkenbachi Morrill County, Nebraska (lower part of the formation).[2] Skulls.[2] Synonymized with M. barbouri.[4]
M. marslandensis Box Butte County, Nebraska (upper part of the formation).[3] Skulls.[3] Synonymized with M. barbouri.[4]

Reptiles

[edit]

Testudines

[edit]
Testudines reported from the Marsland Formation
Genus Species Presence Material Notes Images
Macroclemys M. schmidti Box Butte County, Nebraska.[5] A fragmentary juvenile skull & an adult skull.[5] A snapping turtle.

See also

[edit]

References

[edit]
  1. ^ a b Schultz, C. Bertrand (Charles Bertrand); Falkenbach, Charles H. (1941). "Ticholeptinae : a new subfamily of oreodonts". Bulletin of the AMNH. 79 (1): 4–105. hdl:2246/379.
  2. ^ a b c d Tanner, Lloyd (1972-07-01). "A New Species of Menoceras from the Marsland Formation of Nebraska". Bulletin of the University of Nebraska State Museum.
  3. ^ a b c d Tanner, Lloyd (1969-01-01). "A New Rhinoceros from the Nebraska Miocene". Bulletin of the University of Nebraska State Museum.
  4. ^ a b Prothero, Donald R. (2005-03-07). The Evolution of North American Rhinoceroses. Cambridge University Press. p. 62. ISBN 978-0-521-83240-3.
  5. ^ a b Whetstone, Kenneth N. (1978). "Additional Record of the Fossil Snapping Turtle Macroclemys schmidti from the Marsland Formation (Miocene) of Nebraska with Notes on Interspecific Skull Variation within the Genus Macroclemys". Copeia. 1978 (1): 159–162. doi:10.2307/1443841. ISSN 0045-8511. JSTOR 1443841.


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