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Palaeoscaptor acridens

Mammalia - Erinaceidae

Taxonomy
Palaeoscaptor acridens was named by Matthew and Granger (1924) [Matthew & Granger did not specifically indicate a type species for Palaeoscaptor, but based on page priority, P. acridens would be the type species. The other species described at the same time is P. rectus.]. It is not extant. Its type specimen is AMNH 19138, a mandible (sin. with p4-m3). Its type locality is 15 miles east of Loh, which is in an Oligocene terrestrial horizon in the Hsanda Gol Formation of Mongolia.

Synonymy list
YearName and author
1924Palaeoscaptor acridens Matthew and Granger p. 2 figs. Fig. 2
2004Palaeoscaptor acridens Wang and Qiu p. 131

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Life
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
subclassSynapsida
Therapsida()
RankNameAuthor
infraorderCynodontia()
Mammaliamorpha
Mammaliaformes
classMammalia
Theriamorpha(Rowe 1993)
Theriiformes()
Trechnotheria
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
Laurasiatheria
Eulipotyphla
familyErinaceidaeFischer von Waldheim 1817
genusPalaeoscaptor
speciesacridens

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.

Palaeoscaptor acridens Matthew and Granger 1924
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Diagnosis
ReferenceDiagnosis
W. D. Matthew and W. Granger 1924Dentition probably /2./1./3./3/ First incisor (?i2) enlarged, a long slender, simple procumbent tooth, enamelled, without heel or serrations; second incisor not preserved, the alveolus quite small, round oval; the canine small, root semi-double, crown premolariform and extended forward, followed by a similar but somewhat smaller and less forwardly extended tooth with semi-double root; the last premolar two-rooted, small, sub-molariform, with trigonid-like main cusp and small transversely-crested heel; m1 much larger, with trigonid longer than wide, of three sharply angulate cusps, and deeply basined heel with acute cusps at posterior angles. m2 considerably smallr than m1, similar trigonid relatively lower and shorter; m3 much reduced, with low single-cusped heel. The heel cusp is of considerable size on the type, but in other specimens it is vestigal; there is also a considerable range in size in the twenty or more fragmentary jaws that represent the genus; but we are unable to fix associated constant distinctions to dived the material into species.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: semifossorialf
Diet: insectivoref
Diet 2: carnivoref
Reproduction: viviparoussubc
Created: 2005-06-08 10:11:09
Modified: 2012-05-14 22:01:37
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Ji et al. 2002, Hendy et al. 2009, Carroll 1988, Nowak 1991, Lillegraven 1979

Age range: base of the Early/Lower Oligocene to the top of the Early/Lower Miocene or 33.90000 to 15.97000 Ma

Collections (30 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Oligocene33.9 - 28.4China (Gansu) Palaeoscaptor acridens (77998)
Early/Lower Oligocene33.9 - 28.4Mongolia Palaeoscaptor acridens (type locality: 174916 175168)
Early/Lower Oligocene33.9 - 28.4China (Nei Mongol) Palaeoscaptor acridens (174759)
Early/Lower Oligocene33.9 - 28.4Mongolia (Övörkhangai) Palaeoscaptor acridens (135791 175169 180953 180955 180956 180959 182131 187263 187298 187301 201185 201191)
Early/Lower Oligocene33.9 - 28.4China (Xinjiang) Palaeoscaptor acridens (174978)
Late/Upper Oligocene28.4 - 23.03Mongolia (Övörkhangai) Palaeoscaptor acridens (182075 182078 182081)
Late/Upper Oligocene28.4 - 23.03Kazakhstan Palaeoscaptor acridens (64413 74900)
Late/Upper Oligocene28.4 - 23.03Mongolia Palaeoscaptor acridens (75588 75599 180971 182080)
Early/Lower Miocene23.03 - 15.97Mongolia Palaeoscaptor acridens (180965 180976 182088 182089)