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Anodontosaurus lambei

Reptilia - Ankylosauridae

Taxonomy
Anodontosaurus lambei was named by Sternberg (1929). Its type specimen is NMC 8530, a partial skeleton (skull,lowerjaws,caudalvertebra, ischium, pedal phalanx and osteoderms (including first cervical half ring)), and it is a 3D body fossil. Its type locality is 8 miles southwest of Morrin (90 ft level) [NMC], which is in a Maastrichtian terrestrial sandstone in the Horseshoe Canyon Formation of Canada.

It was synonymized subjectively with Dyoplosaurus acutosquameus by Ford (2000); it was synonymized subjectively with Euoplocephalus tutus by Carpenter (2001), Vickaryous et al. (2004), Ryan and Evans (2005).

Synonymy list
YearName and author
1929Anodontosaurus lambei Sternberg p. 28 figs. pl. 17-20
1930Anodontosaurus lambei Russell p. 151
1933Anodontosaurus lambei Russell p. 129
1964Anodontosaurus lambei Kuhn p. 45
1964Anodontosaurus lambei Russell p. 15
1965Anadontosaurus lambei Simmons p. 70
1967Anodontosaurus lambei Russell and Chamney p. 11
1970Andontosaurus lambei Bodily p. 37
1997Anodontosaurus lambei Eberth p. 201
2013Anodontosaurus lambei Arbour and Currie p. 31
2013Anodontosaurus lambei Kirkland et al. p. 7
2013Anodontosaurus lambei Penkalski and Blows p. 181
2014Anodontosaurus lambei Arbour et al. p. 2
2014Anodontosaurus lambei Arbour et al. p. 635
2014Anodontosaurus lambei Han et al. p. 12
2014Anodontosaurus lambei Penkalski p. 617
2016Anodontosaurus lambei Arbour and Currie p. 418
2017Anodontosaurus lambei Arbour and Mallon p. 771
2018Anodontosaurus lambei Penkalski p. 266

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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
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
RankNameAuthor
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Ornithischia()
—Genasauria
—Thyreophora()
—Ankylosauria()
familyAnkylosauridae
subfamilyAnkylosaurinaeNopcsa 1918
tribeEuoplocephalini
genusAnodontosaurus
specieslambei

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.

†Anodontosaurus lambei Sternberg 1929
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Diagnosis
ReferenceDiagnosis
V. M. Arbour and P. J. Currie 2013Differs from Euoplocephalus tutus and Scolosaurus cutleri in having subcircular caputegulae at bases of quadratojugal and squamosal horns (postocular caputegulae), and interstitial osteoderms at bases of primary osteoderms on first cervical half ring; differs from Euoplocephalus tutus and Dyoplosaurus acutosquameus in having pointed, triangular major osteoderms on tail club knob and in having tail club knob width greater than length; differs from Dyoplosaurus acutosquameus in having laterally-directed sacral ribs, and U-shaped pedal unguals; differs from Scolosaurus cutleri in having a proportionately shorter postacetabular process of the ilium; differs from Ankylosaurus magniventris in having anteriorly-directed nares, and in lacking a continuous keel between the squamosal horn and supraorbitals.
V. M. Arbour and P. J. Currie 2016Differs from Euoplocephalus tutus and Scolosaurus cutleri in having subcircular caputegulae at bases of quadratojugal and squamosal horns (postocular caputegulae), and interstitial osteoderms at bases of primary osteoderms on first cervical half ring; differs from Euoplocephalus tutus and Dyoplosaurus acutosquameus in having pointed, triangular major osteoderms on tail club knob and in having tail club knob width greater than length; differs from Dyoplosaurus acutosquameus in having laterally directed sacral ribs, and U-shaped pedal unguals; differs from Scolosaurus cutleri in having a proportionately shorter postacetabular process of the ilium; differs from Ankylosaurus magniventris in having anteriorly directed nares, and in lacking a continuous keel between the squamosal horn and supraorbitals.
P. Penkalski 2018Bell-shaped nasal plate bordered caudally/caudolaterally by two bilaterally symmetric pairs of scales; coronoid process reduced; free osteoderms relatively smooth.
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yeso
Adult length: 10 to < 100o
Adult width: 1.0 to < 10o
Adult height: 1.0 to < 10o
Architecture: compact or denseo
Ontogeny: accretion, modification of partso
Grouping: gregariouso
Environment: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: herbivoreo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2004-12-14 12:50:52
Modified: 2004-12-14 14:50:52
Source: o = order
Reference: Marsh 1875

Age range: base of the Late/Upper Campanian to the top of the Early/Lower Maastrichtian or 83.60000 to 66.00000 Ma

Collections (12 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Campanian83.6 - 72.2Canada (Alberta) Anodontosaurus lambei (155222)
Late/Upper Campanian - Early/Lower Maastrichtian83.6 - 66.0Canada (Alberta) Ankylosaurus sp. (51966)
Early/Lower Maastrichtian72.2 - 66.0Canada (Alberta) Ankylosauria indet. (11899 type locality: 45733 155225 155227) Anodontosaurus lambei (94370 144561 155226 229870) Euoplocephalus sp. (64630 155223)