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'''''Alligator mcgrewi''''' is an [[extinct]] species of [[alligator]] [[species description|described]] by [[Karl Patterson Schmidt|K.P. Schmidt]]. They lived in the [[Early Miocene]] period,<ref name=Fossilworks/><ref name=GBIF>Alligator mcgrewi Schmidt, 1941 in Paleobiology Database (2018). The Paleobiology Database. Checklist dataset https://doi.org/10.15468/zzoyxi accessed via GBIF.org on 2020-11-05.</ref> and their range was principally in what is now [[Nebraska]], [[United States]].<ref name=Fossilworks>{{cite web |url=http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=172980 |title=†''Alligator mcgrewi'' Schmidt 1941 (Alligator) |work=Paleobiology Database |publisher=Fossilworks |access-date=13 November 2020}}</ref>
'''''Alligator mcgrewi''''' is an [[extinct]] species of [[alligator]] [[species description|described]] by [[Karl Patterson Schmidt|K.P. Schmidt]] in 1941. They lived in the [[Early Miocene]] period,<ref name=Fossilworks/><ref name=GBIF>Alligator mcgrewi Schmidt, 1941 in Paleobiology Database (2018). The Paleobiology Database. Checklist dataset https://doi.org/10.15468/zzoyxi accessed via GBIF.org on 2020-11-05.</ref> and their range was principally in what is now [[Nebraska]], [[United States]].<ref name=Fossilworks>{{cite web |url=http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=172980 |title=†''Alligator mcgrewi'' Schmidt 1941 (Alligator) |work=Paleobiology Database |publisher=Fossilworks |access-date=13 November 2020}}</ref>

==Classification==
''Alligator mcgrewi'' is a member of the [[subfamily]] [[Alligatorinae]], within the larger [[family (biology)|family]] [[Alligatoridae]]. It is related to the living [[American alligator]] and [[Chinese alligator]], as shown in the [[cladogram]] below:<ref name=PanamaCrocs>{{Cite journal | last1 = Hastings | first1 = A. K. | last2 = Bloch | first2 = J. I. | last3 = Jaramillo | first3 = C. A. | last4 = Rincon | first4 = A. F. | last5 = MacFadden | first5 = B. J. | title = Systematics and biogeography of crocodylians from the Miocene of Panama | doi = 10.1080/02724634.2012.713814 | journal = Journal of Vertebrate Paleontology | volume = 33 | issue = 2 | pages = 239 | year = 2013 | bibcode = 2013JVPal..33..239H | s2cid = 83972694 | doi-access = free }}</ref><ref name=NecrosuchusRev>{{Cite journal | last1 = Brochu | first1 = C. A. | doi = 10.1111/j.1096-3642.2011.00716.x | title = Phylogenetic relationships of Necrosuchus ionensis Simpson, 1937 and the early history of caimanines | journal = Zoological Journal of the Linnean Society | volume = 163 | pages = S228–S256 | year = 2011 | doi-access = free }}</ref>
{{clade| style=font-size:85%;line-height:85%
|label1='''[[Alligatoridae]]'''
|1={{clade
|1='''[[Caimaninae]]'''
|label2='''[[Alligatorinae]]'''
|2={{clade
|1=''[[Ceratosuchus burdoshi]]''{{extinct}}
|2=''[[Hassiacosuchus haupti]]''{{extinct}}
|3=''[[Navajosuchus mooki]]''{{extinct}}
|4={{clade
|1=''[[Wannaganosuchus brachymanus]]''{{extinct}}
|2=''[[Arambourgia gaudryi]]''{{extinct}}
|3={{clade
|1=''[[Allognathosuchus polyodon]]''{{extinct}}
|2=''[[Allognathosuchus wartheni]]''{{extinct}}
|3=''[[Procaimanoidea kayi]]''{{extinct}} }}
|label4=''[[Alligator]]''
|4={{clade
|1=''[[Alligator prenasalis]]''{{extinct}}
|2={{clade
|1='''''Alligator mcgrewi'''''{{extinct}}
|2={{clade
|1=''[[Alligator olseni]]''{{extinct}}
|2={{clade
|1=''Alligator sinensis'' '''[[Chinese alligator]]'''
|2={{clade
|1=''[[Alligator thomsoni]]''{{extinct}}
|2=''[[Alligator mefferdi]]''{{extinct}}
|3=''Alligator mississippiensis'' '''[[American alligator]]''' }} }} }} }} }} }} }} }} }}


==Measurements==
==Measurements==
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{{Taxonbar|from=Q101208453}}
{{Taxonbar|from=Q101208453}}


[[Category:Alligatoridae]]
[[Category:Alligator|mcgrewi]]
[[Category:Miocene reptiles of North America]]
[[Category:Miocene reptiles of North America]]
[[Category:Fossil taxa described in 1941]]
[[Category:Fossil taxa described in 1941]]

Revision as of 19:26, 30 April 2024

Alligator mcgrewi
Temporal range: Early Miocene 20.43–15.97 Ma[1]
↓
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Archosauromorpha
Clade: Archosauriformes
Order: Crocodilia
Family: Alligatoridae
Subfamily: Alligatorinae
Genus: Alligator
Species:
†A. mcgrewi
Binomial name
†Alligator mcgrewi
Schmidt, 1941

Alligator mcgrewi is an extinct species of alligator described by K.P. Schmidt in 1941. They lived in the Early Miocene period,[2][3] and their range was principally in what is now Nebraska, United States.[2]

Classification

Alligator mcgrewi is a member of the subfamily Alligatorinae, within the larger family Alligatoridae. It is related to the living American alligator and Chinese alligator, as shown in the cladogram below:[4][5]

Alligatoridae

Measurements

The average measurements for the skull of A. mcgrewi are 145 x 96 in millimeters. Based on the length, the estimated body mass was 3 kg.[2]

References

  1. ^ Rio, Jonathan P.; Mannion, Philip D. (6 September 2021). "Phylogenetic analysis of a new morphological dataset elucidates the evolutionary history of Crocodylia and resolves the long-standing gharial problem". PeerJ. 9: e12094. doi:10.7717/peerj.12094. PMC 8428266. PMID 34567843.
  2. ^ a b c "†Alligator mcgrewi Schmidt 1941 (Alligator)". Paleobiology Database. Fossilworks. Retrieved 13 November 2020.
  3. ^ Alligator mcgrewi Schmidt, 1941 in Paleobiology Database (2018). The Paleobiology Database. Checklist dataset https://doi.org/10.15468/zzoyxi accessed via GBIF.org on 2020-11-05.
  4. ^ Hastings, A. K.; Bloch, J. I.; Jaramillo, C. A.; Rincon, A. F.; MacFadden, B. J. (2013). "Systematics and biogeography of crocodylians from the Miocene of Panama". Journal of Vertebrate Paleontology. 33 (2): 239. Bibcode:2013JVPal..33..239H. doi:10.1080/02724634.2012.713814. S2CID 83972694.
  5. ^ Brochu, C. A. (2011). "Phylogenetic relationships of Necrosuchus ionensis Simpson, 1937 and the early history of caimanines". Zoological Journal of the Linnean Society. 163: S228–S256. doi:10.1111/j.1096-3642.2011.00716.x.


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