A new species of the fossil beaked whale Beneziphius (Cetacea, Odontoceti, Ziphiidae) from the ocean floor off Galicia and biostratigraphic reassessment for the age of the type species

Miján, Ismael; Louwye, Stephen; Lambert, Olivier

doi:10.4202/app.00309.2016

Cited by 3 publications

(9 citation statements)

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“…It is hypothesized that in most (if not all) cases the sediment recovered from the crania entered there during the initial burial phase; it is indeed difficult to imagine sediment from deep openings being removed and replaced by geologically younger sediment in a second phase of burial (for reworked material). We thus propose that the geological age of the sediment corresponds to the time of initial burial for the ziphiid specimen and makes a reliable source for the age interval of the latter, as proposed earlier for specimens of Beneziphius brevirostris and Mesoplodon posti from the same region (Lambert & Louwye, 2016;Miján et al, 2017). Z1 to Z16 indicate sediment samples analysed for palynology.…”

Section: Ziphiid Fossil Specimens and Sediment Samplingsupporting

confidence: 58%

“…The maxillary portion of the lateral wall of each depression displays an irregular surface, with pits and humps that are reminiscent of the excrescences observed in this area in Beneziphius spp., Choneziphius spp. and, to a lesser extent T. atlanticus, and interpreted as areas of origin for rostral and facial muscles (Bianucci et al, 2013;Miján et al, 2017). As in many other ziphiids, the right premaxillary sac fossa is much broader than the left.…”

Section: Brief Description and Comparison Of Irsnb M2333mentioning

confidence: 92%

“…Consequently, despite such an increasingly rich fossil record, it remains difficult to properly assess the evolution of the diversity of this highly successful cetacean family through time, the lack of temporal resolution preventing from adequately testing proposals for radiation events and extinctions. Nevertheless, new developments including the in situ discovery of additional specimens (Bosselaers et al, 2004;Ramassamy, 2016), isotopic analyses of fossil bones and attached minerals ( 187 Os/ 188 Os; Nozaki et al, 2017;14 C;Lambert et al, 2018), and palynological analyses of sediment associated with fossil remains (Lambert & Louwye, 2006;Lambert & Louwye, 2016;Miján et al, 2017) provide directions for future improvements. Focusing on the southern North Sea, recent works suggest that ziphiids occupied this region in a time interval ranging from the Middle Miocene to the Early Pliocene.…”

Section: Introductionmentioning

confidence: 99%

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Past beaked whale diversity in the North Sea: reappraisal through a new Miocene record and biostratigraphic analyses

LAMBERT,

BOSSELAERS,

LOUWYE

2023

Geol. Belg.

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Extant beaked whales (family Ziphiidae) are deep diving suction feeders and none of them can be considered as a permanent resident of the shallow southern North Sea. The rich fossil record of ziphiids from Neogene deposits of this area is thus surprising. However, chronostratigraphic intervals of most recorded taxa remain poorly constrained, preventing from assessing the evolution of their local diversity. In this work, we describe a new ziphiid cranium from the Neogene of Antwerp (north of Belgium), which is attributed to Caviziphius aff. C. altirostris. Sediment samples were extracted from 15 fossil ziphiid cranial remains from this area (including the one described herein), referred to eight species. The samples were analysed for their palynological content, leading to improved chronostratigraphic ranges for several species. Seven to eight ziphiid species from the southern North Sea, all from the Messapicetus clade, are proposed to originate from a Serravallian to Tortonian (late Middle to early Late Miocene) interval, and three to six more precisely from the mid- to late Tortonian. Added to the fossil record of other regions, these results point to a Late Miocene radiation of members of the Messapicetus clade, possibly related to the synchronous worldwide decline of several hyper-longirostrine dolphin clades.

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Section: Ziphiid Fossil Specimens and Sediment Samplingsupporting

confidence: 58%

Section: Brief Description and Comparison Of Irsnb M2333mentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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Past beaked whale diversity in the North Sea: reappraisal through a new Miocene record and biostratigraphic analyses

LAMBERT,

BOSSELAERS,

LOUWYE

2023

Geol. Belg.

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“…These are mostly scattered and limited to small cranial, vertebral, and appendicular remains referred to the suborder Mysticeti, although fairly complete specimens have also been reported occasionally. Findings ascribed to the suborder Odontoceti have been reported in both the Miocene [29,32,[36][37][38][39][40][41][42][43] and Pliocene strata [44][45][46]. Equally, mysticete remains have been reported from both the Miocene [37,[47][48][49] and Pliocene strata [20,46,[50][51][52][53][54].…”

Section: Introductionmentioning

confidence: 99%

Taphonomy of a Mysticete Whale from the Lower Pliocene of the Coast of Cádiz (Spain)

Bosio,

Bajo-Campos,

Collareta

et al. 2023

JMSE

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A fossil mysticete was discovered along the southwestern coast of Spain, occurring in a block detached from the Neogene deposits exposed along a coastal cliff at the locality of Conil de la Frontera (Cádiz, Spain). These deposits range from Pliocene to Pleistocene in age and include shallow-marine, mixed carbonate–siliciclastic sediments, with the whale being found in occurrence of a stratigraphic unconformity marked by Thalassinoides burrows. 87Sr/86Sr analyses on oyster shells associated with the skeleton suggest an Early Pliocene age, in agreement with the age of the lowermost unit cropping out at the study site. The studied cetacean specimen consists of an articulated, almost complete balaenopteroid skeleton exposed in the field dorsal side up; being contained in an upside-down block, however, it is preserved in ventral disposition. Bones exhibit a low degree of preservation of the cortical bone tissue, which locally features shark bite marks and Osedax traces as well as abundant encrustations of barnacles and ostreids. Two shark teeth were also found near the skeleton. Bones have preserved their main histological features, even though they locally exhibit microcracks, dissolution, substitution by Fe oxides, and microborings. Sediment particles and late diagenetic cements fill the medullary cavities. We propose that the whale carcass experienced refloating before sinking to the seafloor and that the skeleton was probably exposed on the seafloor for some time before being eventually buried.

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“…In the last decade, our knowledge of fossil beaked whales has increased dramatically (Bianucci et al, 2005;Lambert, 2005;Lambert and Louwye, 2006;Bianucci et al, 2007;Fuller and Godfrey, 2007;Lambert et al, 2009;Lambert et al, 2010;Bianucci et al, 2013;Buono and Cozzuol, 2013;Lambert et al, 2013;Lambert et al, 2015;Ichishima et al, 2016;Lambert and Louwye, 2016;Ramassamy, 2016;Miján et al, 2017;Gioncada et al, 2018). The beaked whale family Ziphiidae includes two groups, crown Ziphiidae and a clade comprising the extinct Messapicetus (Bianucci et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Crown beaked whale fossils from the Chepotsunai Formation (latest Miocene) of Tomamae Town, Hokkaido, Japan

Tanaka

Watanabe

Kimura

2019

Palaeontol Electron

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In the last decades, our knowledge of ziphiid evolution has increased dramatically. However, their periotic morphology is still poorly known. A fossil ziphiid (TTM-1) including the periotic, bulla, isolated polydont teeth and vertebrae from the Chepotsunai Formation (latest Miocene) of Tomamae Town, Hokkaido, Japan, is identified as a member of a clade with crown ziphiids of Bianucci et al. (2016) by having three periotic synapomorphies; a posteriorly wide posterior process, transversely thick anterior process, and laterally elongated lateral process. The specimen adds morphological information of the periotic. Among the Ziphiidae from the stem to crown, the periotic morphologies were changed to having a more robust anterior process, wider anterior bullar facet and posterior process. The crown Ziphiidae shares a feature; enlarged medial tubercle on the anterior process. Among the crown Ziphiidae, TTM-1 does not have a swollen medial tubercle not like Tasmacetus, Nazcacetus and others. This new morphological information might represent useful future phylogenetic comparisons.

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A new species of the fossil beaked whale Beneziphius (Cetacea, Odontoceti, Ziphiidae) from the ocean floor off Galicia and biostratigraphic reassessment for the age of the type species

Abstract: Although the fossil record of beaked whales (Cetacea, Odontoceti, Ziphiidae)

Cited by 3 publications

References 0 publications

Past beaked whale diversity in the North Sea: reappraisal through a new Miocene record and biostratigraphic analyses

Past beaked whale diversity in the North Sea: reappraisal through a new Miocene record and biostratigraphic analyses

Taphonomy of a Mysticete Whale from the Lower Pliocene of the Coast of Cádiz (Spain)

Crown beaked whale fossils from the Chepotsunai Formation (latest Miocene) of Tomamae Town, Hokkaido, Japan

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