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Squaloziphius emlongi

Mammalia - Cetacea - Squaloziphiidae

Taxonomy
Squaloziphius emlongi was named by Muizon (1990). Its type specimen is USNM 181528, a partial skull (skull lacking rostrum and ear bones), and it is a 3D body fossil. Its type locality is Slip Point Lighthouse, which is in an Aquitanian marine shale/sandstone in the Clallam Formation of Washington.

Synonymy list
YearName and author
1990Squaloziphius emlongi Muizon pp. 282-292 figs. 1-4
2006Squaloziphius emlongi Ichishima and Sawamura p. 80A
2008Squaloziphius emlongi Uhen et al. p. 572
2011Squaloziphius emlongi Geisler et al. p. 5 figs. Table 1
2019Squaloziphius emlongi Lambert et al.

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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
—Amblyoccipita
—Stegoceti
familySqualoziphiidae()
genusSqualoziphius
speciesemlongi

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.

†Squaloziphius emlongi Muizon 1990
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Diagnosis
ReferenceDiagnosis
C. Muizon 1990Small ziphiid close in size to Mesoplodon bidens; rostrum wide at its base and dorso-ventrally flattened; narial fossa very elongated and passing continuously to the mesorostral gutter; premaxillae with spiracular plates narrow and straight in lateral view, showing the typical transverse premaxillary crest of ziphiids on the vertex, and overhanging the maxillae laterally; naso-frontal platform elongated antero-posteriorly; temporal fossa visible dorsally and not totally covered by maxillae and parietals; jugal and lacrymal not fused; preorbital process prominent and antorbital notch deep; supraorbital process thin; zygomatic process very large and stout and having an enormous rounded postglenoid process; pterygoid bones with long and unexcavated hamular apices. Wide and large hamular fossa for the hamular lobe of the pterygoid sinus; dorsal border of the pterygoid sinus not reaching the roof of the orbit and temporal fossa; palatines large; alar process of the basioccipital excavated by a fossa for a medial lobe of pterygoid sinus; basioccipital basin extremely large and wide; lamboid crests not very long and supraoccipital wide and flat; cerebral skull not as developed as in the living ziphiids.
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: carnivoresubo
Reproduction: viviparoussubo
Created: 2005-03-06 14:21:39
Modified: 2005-09-22 15:42:08
Source: subo = suborder, o = order
Reference: Uhen 2004

Age range: Aquitanian or 23.04000 to 20.45000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Aquitanian23.04 - 20.45USA (Washington) Squaloziphius emlongi (type locality: 45481)