Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Homalocephale calathocercos

Reptilia

Taxonomy
Homalocephale calathocercos was named by Maryańska and Osmólska (1974). Its type specimen is MPC-D/GI SPS 100/1201 (= MPC-D/GI SPS 100/51), a partial skeleton, and it is a 3D body fossil. Its type locality is Nemegt, Western Sayr, site 8 [PMPE], which is in a Maastrichtian terrestrial conglomerate/sandstone in the Nemegt Formation of Mongolia.

Synonymy list
YearName and author
1974Homalocephale calathocercos Maryańska and Osmólska p. 56 figs. 1D, 4-5; Pl. 22:1, 24, 26-30, 31:1
1977Homalocephale calathocercos Rozhdestvensky p. 114
1979Homalocephale calathocercos Wall and Galton p. 1182
1982Homalocephale calathocercos Perle et al. pp. 116-117
1986Homalocephale calathocercos Zhao p. 72
1990Homalocephale calathocercos Maryanska p. 566
1994Homalocephale calathocercos Olshevsky and Ford p. 91
1997Homalocephale calathocercos Barsbold p. 449
1997Homalocephale calathocercos Osmólska p. 472
1997Homalocephale calathocercos Sues p. 512
2000Homalocephale calathocercos Sereno p. 482
2003Homalocephale calathocercos Williamson and Carr fig. 11
2004Homalocephale calathocercos Maryanska et al. p. 465
2006Homalocephale calathocercos Sullivan p. 353
2008Homalocephale calathocercos Butler et al. p. 9
2009Homalocephale calathocercos Butler and Sullivan p. 26
2009Homalocephale calathocercos Butler and Zhao p. 66
2009Homalocephale calathocercos Schott et al. p. 783 fig. 8
2009Homalocephale calathocercos Williamson et al. p. 292
2010Homalocephale calathocercos Longrich et al. p. 280
2012Homalocephale calathocercos Han et al. p. 1391 fig. 14
2012Homalocephale calathocercos Schott and Evans p. 909
2016Homalocephale calathocercos Currie p. 96
2018Homalocephale calathocercos Evans et al. p. 121
2019Homalocephale calathocercos Herne et al. p. 572
2020Homalocephale calathocercos Dieudonné et al.
2020Homalocephale calathocercos Yang et al. p. 4
2021Homalocephale calathocercos Woodruff et al. p. 581

Is something missing? Join the Paleobiology Database and enter the data

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()
RankNameAuthor
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Ornithischia()
—Genasauria
—Cerapoda
—Marginocephalia
—Pachycephalosauria()
—Eupachycephalosauria
genusHomalocephale
speciescalathocercos

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.

†Homalocephale calathocercos Maryańska and Osmólska 1974
show all | hide all
Diagnosis
ReferenceDiagnosis
T. Maryańska and H. Osmólska 1974Cranial roof thick but completely fiat. Supratemporal fenestra large. In- terfrontal and frontoparietal sutures distinct. Infratemporal fenestra low and long. Orbit large and nearly round. Quad rate deflected back ward s along the upper half of its length. Occipital region moderately concave, deepened centrally. Foramen magnum round and large. Occipital condyle large. Basaltubera flat anteroposteriorly, their ventral edges very close to quadratic wings of pterygoids. Ventral maxillary edge arched outwards posteriorly. Maxillary teeth with small crowns. Cranial roof roughly ornamented.
A. Perle et al. 1982Supratemporal fenestra rounded, interfenestral brigde broad, equal about the transverse width of supratemporal fenestra. Interfrontal and frontoparietal sutures distinct. Infratemporal fenestra broad anteroposteriorly and high dorsoventrally. Orbit large and nearly round. Dorsal part of quadrate deflected posteriorly. Occiput moderately concave, deepened at the centre. Foramen magnum relatively large, about one seventh of width of the occiput. Occipital condyle large. Ventral maxillary edge bowed laterally along its posterior portion. Cranial roo froughly ornamented. Sacrum incuding 6 coalesced vertebrae. Preacetabular process of ilium with gently convex dorsal surface; medial iliac flange long anteroposteriorly: postacetabular process curved downwards in lateral view.
R. J. Butler et al. 2008A postacetabular process of the ilium that is crescent-shaped and ventrally deflected.
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yesg
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: 2005-08-25 05:51:37
Modified: 2005-08-25 07:51:37
Source: g = genus, o = order
References: Peczkis 1995, Marsh 1875

Age range: Maastrichtian or 72.10000 to 66.00000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Maastrichtian72.1 - 66.0Mongolia (Omnogov) Homalocephale calathocercos (37019) Ornithischia indet. (type locality: 180473)