Marsland Formation

Stratigraphic range: Neogene

Fossil mammal from the Marsland Formation (Middle Miocene; Nebraska)

Type| Geological 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

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Color key
| Taxon | Reclassified taxon | Taxon falsely reported as present | Dubious taxon or junior synonym | Ichnotaxon | Ootaxon | Morphotaxon

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| Notes
Uncertain or tentative taxa are in small text; ~~crossed out~~ taxa are discredited.

### Mammals

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#### Ungulates

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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

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#### Testudines

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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

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* Earth sciences portal
* Paleontology portal

* List of fossiliferous stratigraphic units in Nebraska
* Paleontology in Nebraska

## References

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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:2246/379.4-105&rft.date=1941&rft_id=info:hdl/2246/379&rft.aulast=Schultz&rft.aufirst=C.+Bertrand+(Charles+Bertrand)&rft.au=Falkenbach,+Charles+H.&rft_id=https://digitallibrary.amnh.org/handle/2246/379&rfr_id=info:sid/en.wikipedia.org:Marsland+Formation" class="Z3988">
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 1443841.159-162&rft.date=1978&rft.issn=0045-8511&rft_id=https://www.jstor.org/stable/1443841#id-name=JSTOR&rft_id=info:doi/10.2307/1443841&rft.aulast=Whetstone&rft.aufirst=Kenneth+N.&rft_id=https://www.jstor.org/stable/1443841&rfr_id=info:sid/en.wikipedia.org:Marsland+Formation" class="Z3988">

* Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.

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