The pygmy right whale Caperea marginata - the last of the cetotheres (project)

Fordyce, Erin; Marx, G

doi:10.7934/p578

Cited by 2 publications

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“…From a phylogenetic point of view, cetotheriids generally fall within crown Mysticeti (but see e.g. Bouetel and Muizon (2006) and for a more stemward position), either as sister-group to Eschrichtiidae (Steeman 2007;Bisconti 2008), sister-group to Eschrichtiidae + Balaenopteridae (Bisconti 2014;El Adli et al 2014), or as mentioned above in a clade with Neobalaenidae (Fordyce and Marx 2013;Marx and Fordyce 2015).…”

Section: Introductionmentioning

confidence: 99%

“…As redefined by Bouetel and Muizon (2006), Cetotheriidae are a monophyletic group of cosmopolitan, toothless, relatively small-sized baleen-bearing mysticetes. The record of cetotheriids ranges from the middle Miocene to the early or Middle Pleistocene (Boessenecker 2013), although the extant pygmy right whale Caperea marginata, traditionally regarded as the only living member of the family Neobalaenidae, has been recently proposed to be a relict cetotheriid (Fordyce and Marx 2013;Marx and Fordyce 2015). From a phylogenetic point of view, cetotheriids generally fall within crown Mysticeti (but see e.g.…”

Section: Introductionmentioning

confidence: 99%

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Piscivory in a Miocene Cetotheriidae of Peru: first record of fossilized stomach content for an extinct baleen-bearing whale

Collareta

Landini

Lambert

et al. 2015

Sci Nat

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Instead of teeth, modern mysticetes bear hairfringed keratinous baleen plates that permit various bulkfiltering predation techniques (from subsurface skimming to lateral benthic suction and engulfment) devoted to various target prey (from small invertebrates to schooling fish). Current knowledge about the feeding ecology of extant cetaceans is revealed by stomach content analyses and observations of behavior. Unfortunately, no fossil stomach contents of ancient mysticetes have been described so far; the investigation of the diet of fossil baleen whales, including the Neogene family Cetotheriidae, remains thus largely speculative. We report on an aggregate of fossil fish remains found within a mysticete skeleton belonging to an undescribed late Miocene (Tortonian) cetotheriid from the Pisco Formation (Peru). Micro-computed tomography allowed us to interpret it as the fossilized content of the forestomach of the host whale and to\ud identify the prey as belonging to the extant clupeiform genus Sardinops. Our discovery represents the first direct evidence\ud of piscivory in an ancient edentulous mysticete. Since among modern mysticetes only Balaenopteridae are known to ordinarily consume fish, this fossil record may indicate that part of the cetotheriids experimented some degree of balaenopteridlike engulfment feeding. Moreover, this report corresponds to one of the geologically oldest records of Sardinops worldwide, occurring near the Tortonian peak of oceanic primary productivity and cooling phase. Therefore, our discovery evokes a link between the rise of Cetotheriidae; the setup of modern coastal upwelling systems; and the radiation of epipelagic, small-sized, schooling clupeiform fish in such highly productive environments

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Piscivory in a Miocene Cetotheriidae of Peru: first record of fossilized stomach content for an extinct baleen-bearing whale

Collareta

Landini

Lambert

et al. 2015

Sci Nat

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“…Cetotheriids first appeared in the middle Miocene in the form of Tiucetus and Ciuciulea (MARX et al 2017b;GOL'DIN 2018;BOSIO et al 2020), and attained a seemingly global distribution during the Tortonian (BOUETEL & DE MUIZON 2006;WHITMORE & BARNES 2008;BOESSENECKER 2011;BISCONTI 2015;GOL'DIN & STEEMAN 2015;MARX et al 2016;DI CELMA et al 2017;GOL'DIN & STARTSEV 2017;MARX et al 2019). During the Pliocene, they became restricted to various species of Herpetocetus and then finally disappeared -except, perhaps, for the pygmy right whale Caperea -during the early Pleistocene (BOESSENECKER 2013;FORDYCE & MARX 2013;EL ADLI et al 2014).…”

Section: Introductionmentioning

confidence: 99%

A cetotheriid whale from the upper Miocene of the Mediterranean

Collareta¹,

Marx²,

Casati³

et al. 2021

njgpa

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Cetotheriids are a once diverse clade of baleen whales with a rich fossil record across the entire Northern Hemisphere, except the Mediterranean Basin. Here, we describe a partial mandible from the upper Miocene Arenaria di Ponsano Formation exposed near Pisa (Tuscany, Italy), which unequivocally represents a cetotheriid based on its low, broadly triangular coronoid process, obliquely oriented condyle, deeply excavated subcondylar furrow, and posteriorly elongated angular process. Our new specimen highlights the apparent rarity of this family in the Mediterranean, which may reflect competition with ecologically similar grey whales. The latter, in turn, may explain the geographical isolation and disparate anatomy of the seemingly endemic Paratethyan cetotheriines.

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The pygmy right whale Caperea marginata - the last of the cetotheres (project)

Cited by 2 publications

References 0 publications

Piscivory in a Miocene Cetotheriidae of Peru: first record of fossilized stomach content for an extinct baleen-bearing whale

Piscivory in a Miocene Cetotheriidae of Peru: first record of fossilized stomach content for an extinct baleen-bearing whale

A cetotheriid whale from the upper Miocene of the Mediterranean

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