A Machairodont felid (Mammalia; Carnivora; Felidae) from the latest Hemphillian (Late Miocene/Early Pliocene) Bidahochi Formation, northeastern Arizona

Hodnett, John-Paul

doi:10.5070/p9293021800

Cited by 7 publications

(2 citation statements)

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“…2) placed the GTO 43 in the latest Hemphillian, as also did Carranza-Castañeda et al (2013). Hodnett (2010) remarked that the Guanajuato jaws are similar to Megantereon, but overall, the Mexican form is more closely related to Homotherium. Antón et al (2013) referred the Arroyo Tepalcates materials to Amphimachairodus coloradensis.…”

Section: Taxonomic Remarksmentioning

confidence: 89%

“…in North America Antón et al (2013) were the first to point out that some large North American late Miocene forms were an immigrant from Eurasian Amphimachairodus. The best representative of this immigration event is A. coloradensis, which was previously placed under Machairodus (Cook 1922;Dalquest 1969;Martin and Schultz 1975;Harrison 1983;Hodnett 2010). Such an Amphimachairodus linkage was adopted by more recent authors (Ruiz-Ramoni et al 2019).…”

Section: Chronospecies Succession Of Amphimachairodus Spp In Eurasiamentioning

confidence: 99%

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Fast spread followed by anagenetic evolution in Eurasian and North American Amphimachairodus

2022

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The charismatic sabretooth cat Amphimachairodus has numerous but largely fragmentary records across late Miocene deposits of Africa, Eurasia and North America. The genus has a complex taxonomic history, and the majority of Amphimachairodus materials come from isolated localities, often studied without stratigraphic context. Here, we analyse the long, continuous records from the classic Chinese Baode strata, which produce Amphimachairodus throughout the section, and demonstrate that an A. palanderi-horribilis chronospecies succession represents a continuum of in situ anagenetic evolution of increasing size. We then synthesise chronological occurrences of Amphimachairodus from all Holarctic records and reframe their evolution as a case of chronospecies succession. Two parallel anagenetic lineages are evident: a Eurasian A. giganteuspalanderi-horribilis chronospecies succession and second, a North American A. coloradensis-alvarezi chronospecies succession following an immigration event in the early Hemphillian. In addition to greater hypercarnivory evidenced by dental specialisation, the Eurasian lineage shows a trend towards a large body size, whereas the North American lineage decreases in size. We take this opportunity to describe materials of Amphimachairodus alvarezi from Yepómera (latest Hemphillian) in the state of Chihuahua, Mexico, and previously undescribed materials from San Miguel de Allende Basin. We review taxonomic status of Chinese A. horribilis and related taxa.

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Section: Taxonomic Remarksmentioning

confidence: 89%

Section: Chronospecies Succession Of Amphimachairodus Spp In Eurasiamentioning

confidence: 99%

Fast spread followed by anagenetic evolution in Eurasian and North American Amphimachairodus

2022

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Evidence for the overflow origin of the Grand Canyon

et al. 2020

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Presence of Amphimachairodus coloradensis (Cook, 1922) (Felidae: Machairodontinae) in the Neogene of Hidalgo, Central Mexico

Ruiz-Ramoni

Montellano-Ballesteros

Rincón

et al. 2020

Journal of South American Earth Sciences

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A Machairodont felid (Mammalia; Carnivora; Felidae) from the latest Hemphillian (Late Miocene/Early Pliocene) Bidahochi Formation, northeastern Arizona

Cited by 7 publications

References 0 publications

Fast spread followed by anagenetic evolution in Eurasian and North American Amphimachairodus

Fast spread followed by anagenetic evolution in Eurasian and North American Amphimachairodus

Evidence for the overflow origin of the Grand Canyon

Presence of Amphimachairodus coloradensis (Cook, 1922) (Felidae: Machairodontinae) in the Neogene of Hidalgo, Central Mexico

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