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Sagmatias cruciger

Mammalia - Cetacea - Delphinidae

Taxonomy
Delphinus cruciger was named by Quoy and Gaimard (1824). It is extant. Its type specimen is none designated.

It was recombined as Sagmatias cruciger by LeDuc et al. (1999), Perrin et al. (2013) and Vollmer et al. (2019); it was considered an invalid subgroup of Lissodelphinae by Agnarsson and May-Collado (2008); it was recombined as Lagenorhynchus cruciger by Trouessart (1904), Scheffer and Rice (1963), Hershkovitz (1966), Rice (1998), Mead and Brownell (2005) and Jefferson (2021).

Synonyms
Synonymy list
YearName and author
1824Delphinus albigena Quoy and Gaimard
1824Delphinus cruciger Quoy and Gaimard
1826Delphinus bivittatus Lesson and Garnot
1828Phocaena homei Smith
1829Delphinus albigena Fischer p. 506
1829Delphinus cruciger Fischer p. 506
1829Delphinus bivittatus Fischer p. 510
1846Lagenorhynchus clanculus Gray
1849Lagenorhynchus clanculus Gray p. 2
1850Delphinus obscurus Gray
1850Lagenorhynchus clanculus Gray p. 102
1866Lagenorhynchus clanculus Gray p. 216
1868Electra clanculus Gray p. 7
1873Electra clancula Gray p. 144
1873Delphinus obscurus Scott p. 79
1873Lagenorhynchus clanculus Scott p. 85
1893Phocaena dorbignyi Philippi
1904Delphinus albigena Trouessart p. 765
1904Lagenorhynchus cruciger Trouessart p. 767
1915Lagenorhynchus wilsoni Lillie
1963Lagenorhynchus cruciger Scheffer and Rice p. 6
1966Lagenorhynchus cruciger Hershkovitz p. 62
1998Lagenorhynchus cruciger Rice p. 115
1999Sagmatias cruciger LeDuc et al. p. 639 figs. Figure 2
2005Lagenorhynchus cruciger Mead and Brownell p. 730
2013Sagmatias cruciger Perrin et al. p. 571 figs. Table 1
2019Sagmatias cruciger Vollmer et al.
2021Lagenorhynchus cruciger Jefferson p. 46

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
subclassSynapsida
Therapsida()
infraorderCynodontia()
Mammaliamorpha
Mammaliaformes
classMammalia
RankNameAuthor
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
Laurasiatheria
Scrotifera
Euungulata
Artiodactylamorpha
Artiodactyla()
Whippomorpha
orderCetacea
Pelagiceti
Neoceti
suborderOdontoceti
infraorderDelphinida
superfamilyDelphinoidea
familyDelphinidae
subfamilyLissodelphininae()
genusSagmatias
speciescruciger(Quoy and Gaimard 1824)

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Sagmatias cruciger Quoy and Gaimard 1824
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Invalid names: Delphinus albigena Quoy and Gaimard 1824 [synonym], Delphinus bivittatus Lesson and Garnot 1826 [synonym], Delphinus obscurus Gray 1850 [synonym], Lagenorhynchus clanculus Gray 1846 [synonym], Lagenorhynchus wilsoni Lillie 1915 [synonym], Phocaena dorbignyi Philippi 1893 [synonym], Phocaena homeii Smith 1828 [synonym]
Diagnosis
ReferenceDiagnosis
N. L. Vollmer et al. 2019Sagmatias cruciger has a distinctive black and white pigmentation pattern that easily distinguishes it from the other three Sagmatias species—laterally there are two distinct white blazes (which are often connected by a thin white line) that separate areas of black coloration. Additional features of S. cruciger coloration are given under Coloration.
In general, the skull morphology of all four species of Sagmatias is similar, however, both S. australis and S. cruciger can be distinguished from other Sagmatias species by their shorter rostral length, longer braincase, and higher ramus (Miyazaki and Shikano 1997b). Further- more, S. cruciger is differentiated from S. australis by its greater width of external nares and rostrum base and its smaller braincase (Miyazaki and Shikano 1997b). Sagmatias cruciger has a larger vertebral count and its vertebrae are smaller in overall size compared to those of S. australis (Goodall et al. 1997a, Miyazaki and Shikano 1997b).
Molecular data from both nuclear and mitochondrial DNA markers support the differentiation of S. cruciger from the other species of Sag- matias, Leucopleurus, Lagenorhynchus, Lissodelphis, and Cephalor- hynchus (Fig. 2, 3). In these phylogenies, a close sister-species relationship is often recovered between S. cruciger and S. australis; however, the relationship between S. cruciger and S. obliquidens/ S. obscurus is less clear and studies often have included little to no data from some of these species and particularly S. cruciger (Table 2; LeDuc et al. 1999, Harlin-Cognato and Honeycutt 2006, Agnarsson and May- Collado 2008, McGowen 2011, Banguera-Hinestroza et al. 2014a). Thus, genus-level taxonomic revision may be necessary for S. cruciger conse- quent on additional analyses.
Measurements
No measurements are available
Composition: hydroxyapatitesubo
Form: roller-shapedo
Ontogeny: modification of partso
Environment: marine, freshwatersubo
Locomotion: actively mobileo
Life habit: aquatico
Depth habitat: surfaceo
Diet: piscivoref
Diet 2: carnivoref
Reproduction: viviparoussubo
Created: 2005-06-08 10:11:09
Modified: 2005-06-08 12:11:09
Source: f = family, subo = suborder, o = order
References: Uhen 2004, Nowak 1991

Age range: Holocene or 0.01170 to 0.00000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Holocene0.0117 - 0.0New Zealand Lagenorhynchus cruciger (168131)
Holocene0.0117 - 0.0South Africa Lagenorhynchus cruciger (168133)