The first Haramiyid (Mammalia, Allotheria) from the Jurassic of Russia

Averianov, A. O.; Лопатин, А. В.; Krasnolutskii, Sergei

doi:10.1134/s0012496611020074

Cited by 24 publications

(23 citation statements)

References 6 publications

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“…The mandibular features labeled in that figure (figure 2 in ref. 1) were questioned by Averianov et al (17). Bi and colleagues (18) further argued that "Logically, a mandibular middle ear cannot be assumed in Haramiyavia" (supporting information p. 19 in ref.…”

Section: Mandibular Featuresmentioning

confidence: 99%

“…The conflicting placement of haramiyidans was attributable in part to the uncertainties in interpreting the isolated teeth of most Late Triassic haramiyids (21,22). More recent phylogenetic disagreements have resulted from different interpretations of mandibular characters in Haramiyavia (17)(18)(19)(20)(23)(24)(25), which has not been fully described ( figure 2 in ref. 1).…”

mentioning

confidence: 99%

“…The cusp rows occlude alternately between the upper and lower molars. Primarily because of similarities in molar morphology, haramiyids are considered to be related to poorly known theroteinids of the Late Triassic (5, 13) and eleutherodontids of the Middle to Late Jurassic (14)(15)(16)(17). Collectively haramiyids and eleutherodontids are referred to as "haramiyidans" (10, 14, 15, 18, 19).…”

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confidence: 99%

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Mandibular and dental characteristics of Late Triassic mammaliaform Haramiyavia and their ramifications for basal mammal evolution

Luo

Gatesy

Jenkins

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

106

116

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As one of the earliest-known mammaliaforms, Haramiyavia clemmenseni from the Rhaetic (Late Triassic) of East Greenland has held an important place in understanding the timing of the earliest radiation of the group. Reanalysis of the type specimen using high-resolution computed tomography (CT) has revealed new details, such as the presence of the dentary condyle of the mammalian jaw hinge and the postdentary trough for mandibular attachment of the middle ear-a transitional condition of the predecessors to crown Mammalia. Our tests of competing phylogenetic hypotheses with these new data show that Late Triassic haramiyids are a separate clade from multituberculate mammals and are excluded from the Mammalia. Consequently, hypotheses of a Late Triassic diversification of the Mammalia that depend on multituberculate affinities of haramiyidans are rejected. Scanning electron microscopy study of tooth-wear facets and kinematic functional simulation of occlusion with virtual 3D models from CT scans confirm that Haramiyavia had a major orthal occlusion with the tallest lingual cusp of the lower molars occluding into the lingual embrasure of the upper molars, followed by a short palinal movement along the cusp rows alternating between upper and lower molars. This movement differs from the minimal orthal but extensive palinal occlusal movement of multituberculate mammals, which previously were regarded as relatives of haramiyidans. The disparity of tooth morphology and the diversity of dental functions of haramiyids and their contemporary mammaliaforms suggest that dietary diversification is a major factor in the earliest mammaliaform evolution.

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Section: Mandibular Featuresmentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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Mandibular and dental characteristics of Late Triassic mammaliaform Haramiyavia and their ramifications for basal mammal evolution

Luo

Gatesy

Jenkins

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

106

116

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“…Haramiyida and Multituberculata were considered as two orders in Allotheria in the classification of Kielan-Jaworowska et al (2004). However, a common view is that, if multituberculates and haramiyidans form the clade Allotheria, multituberculates would form a monophyletic group that was derived from "haramiyidans" within Allotheria; thus, "haramiyidans" form a paraphyletic group (Butler, 2000;Butler and Hooker, 2005;Hahn and Hahn, 2006;Averianov and Lopatin, 2011). Given this view and the phylogenetic relationship we prefered Krause et al, 2014), we regard the traditional "haramiyidans" as a paraphyletic group and place the name between quotation marks in the text.…”

Section: Taxonomic Terminologymentioning

confidence: 99%

“…Euharamiyidans are advanced members of "haramiyidans" that were often placed in Allotheria, along with Multituberculata and probably Gondwanatheria, but their taxonomic position within Mammaliaformes is highly contentious (Simpson, 1929(Simpson, , 1947Hahn, 1973;Sigogneau-Russell et al, 1986;Hahn et al, 1989;Butler and MacIntyre, 1994;Jenkins et al, 1997;McKenna and Bell, 1997;Kermack et al, 1998;Butler, 2000;Kielan-Jaworowska et al, 2004;Hahn and Hahn, 2006), and the controversial interpretations of "haramiyidan" relationships are reflected in numerous phylogenetic studies (Lombard and Bolt, 1979;Luo et al, 2002;Rowe et al, 2008;Gurovich and Beck, 2009;Liu and Olsen, 2010;Averianov and Lopatin, 2011). The phylogeny of "haramiyidans" has remained enigmatic partly because most species of the group have been known from isolated teeth (Sigogneau-Russell, 1989;Butler and MacIntyre, 1994;Kermack et al, 1998;Heinrich, 1999;Butler, 2000;Heinrich, 2001;Butler and Hooker, 2005;Maisch et al, 2005;Hahn and Hahn, 2006;Martin et al, 2010;Averianov et al, 2011). Haramiyavia clemmenseni (Jenkins et al, 1997;Luo et al, 2015) is based on fragmentary jaws with relatively well-preserved dentition and some postcranial remains.…”

Section: Introductionmentioning

confidence: 99%

Ear ossicle morphology of the Jurassic euharamiyidan Arboroharamiya and evolution of mammalian middle ear

Meng

Zheng

et al. 2016

Journal of Morphology

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The middle ear bones of Mesozoic mammals are rarely preserved as fossils and the morphology of these ossicles in the earliest mammals remains poorly known. Here, we report the stapes and incus of the euharamiyidan Arboroharamiya from the lower Upper Jurassic (∼160 Ma) of northern China, which represent the earliest known mammalian middle ear ossicles. Both bones are miniscule in relation to those in non-mammalian cynodonts. The skull length/stapedial footplate diameter ratio is estimated as 51.74 and the stapes length as the percentage of the skull length is 4%; both numbers fall into the stapes size ranges of mammals. The stapes is "rod-like" and has a large stapedial foramen. It is unique among mammaliaforms in having a distinct posterior process that is interpreted as for insertion of the stapedius muscle and homologized to the ossified proximal (stapedial) end of the interhyal, on which the stapedius muscle attached. The incus differs from the quadrate of non-mammalian cynodonts such as morganucodontids in having small size and a slim short process. Along with lack of the postdentary trough and Meckelian groove on the medial surface of the dentary, the ossicles suggest development of the definitive mammalian middle ear (DMME) in Arboroharamiya. Among various higher-level phylogenetic hypotheses of mammals, the one we preferred places "haramiyidans" within Mammalia. Given this phylogeny, development of the DMME took place once in the allotherian clade containing euharamiyidans and multituberculates, probably independent to those of monotremes and therians. Thus, the DMME has evolved at least three times independently in mammals. Alternative hypothesis that placed "haramiyidans" outside of Mammalia would require independent acquisition of the DMME in multituberculates and euharamiyidans as well as parallel evolution of numerous derived similarities in the dentition, occlusion pattern, mandibles, cranium, and postcranium between the two groups and between "haramiyidans" and other mammals. J. Morphol. 279:441-457, 2018. © 2016 Wiley Periodicals, Inc.

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Multituberculate mammals from the Middle Jurassic of Western Siberia, Russia, and the origin of Multituberculata

Averianov

Martin

Лопатин

et al. 2020

Papers in Palaeontology

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Tashtykia primaeva gen. et sp. nov. and Tagaria antiqua gen. et sp. nov. (Multituberculata incertae sedis) are described based on isolated teeth from the Middle Jurassic (Bathonian) Itat Formation from the Berezovsk coal mine in Krasnoyarsk Territory, Western Siberia, Russia. Tashtykia primaeva gen. et sp. nov. is characterized by a P5 with three rows of cusps (cusp formula 2B:4M:6L) and a high sectorial p4 with two triangular lobes, five serrations associated with labial and lingual ridges, and a unique distal cusp. Tagaria antiqua gen. et sp. nov. differs from all other multituberculates by a very long P5 with flat crown and many cusps arranged in three rows (4B:6M:7L). Morphologically the teeth of Kermackodon and Megaconus are transitional between Euharamiyida and Middle Jurassic Multituberculata. Kermackodon shares several characteristics with Euharamiyida, such as pointed cusps on the molars connected by longitudinal ridges, a distolabial cusp on the M2 that is higher than the other cusps, and a single large sectorial premolar (p4) with a distal basin. The euharamiyidan characters of Megaconus are an ultimate upper premolar with a shorter lingual side, a p4 with a distal basin, and one cusp on the molars being larger than the other cusps. In addition, Megaconus shares an ultimate upper premolar with three rows of cusps, horizontal wear on the molars, and pyramidal cusps on the molars separated by transverse grooves with multituberculates. The multituberculate characters of Kermackodon include horizontal rather than basined wear on the surface of the molars and serrations on the p4.

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The first Haramiyid (Mammalia, Allotheria) from the Jurassic of Russia

Cited by 24 publications

References 6 publications

Mandibular and dental characteristics of Late Triassic mammaliaform Haramiyavia and their ramifications for basal mammal evolution

Mandibular and dental characteristics of Late Triassic mammaliaform Haramiyavia and their ramifications for basal mammal evolution

Ear ossicle morphology of the Jurassic euharamiyidan Arboroharamiya and evolution of mammalian middle ear

Multituberculate mammals from the Middle Jurassic of Western Siberia, Russia, and the origin of Multituberculata

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