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Eubrontes minusculus

Reptilia - Grallatoridae

Taxonomy
Ornithichnites minusculus was named by Hitchcock (1837). It is considered to be a form taxon. Its type specimen is AC 16/1, a footprint, and it is a trace fossil. Its type locality is Lily Pond Quarry, Gill, which is in a Hettangian fluvial-lacustrine siltstone/sandstone in the Turners Falls Formation of Massachusetts.

It was recombined as Brontozoum minusculum by Hitchcock (1858), Deane (1861), Hitchcock (1871), Hitchcock (1889), Lyman (1894) and Hitchcock (1898); it was recombined as Eubrontes minusculus by Hay (1902), Weems (1992), Gierlinski (1996) and Gierlinski and Pienkowski (1999); it was recombined as Anchisauripus minusculus by Lull (1904), Lull (1915), Lull (1917), Hitchcock and Grier (1927), Hay (1930), Lull (1953), Young (1960), Kuhn (1963), Haubold (1971), Thulborn (1990), Gand et al. (2000) and Fujita et al. (2008); it was recombined as Grallator (Anchisauripus) minusculus by Olsen and Galton (1984); it was considered a nomen dubium by Baird (1957); it was misspelled as Anchisauripus minuscolus by Olsen (1980) and Lockley (1986); it was recombined as Grallator minusculus by Demathieu and Sciau (1992), Demathieu (1993), Demathieu et al. (2002), Demathieu (2003), Gand et al. (2005), Gand et al. (2005), Bessedik et al. (2008), Moreau et al. (2012), Moreau et al. (2014), Moreau et al. (2017), Moreau et al. (2018), Moreau et al. (2019) and Bessedik et al. (2020).

Synonyms
Synonymy list
YearName and author
1837Ornithichnites minusculus Hitchcock p. 175 fig. 8
1858Brontozoum minusculum Hitchcock p. 65 figs. Pls. 11, 40-42, 57
1858Brontozoum tuberatum Hitchcock p. 66 fig. 52
1861Brontozoum minusculum Deane p. 41
1871Brontozoum minusculum Hitchcock p. xxi
1871Brontozoum tuberatum Hitchcock p. xxi
1889Brontozoum tuberatum Hitchcock p. 118
1889Plesiornis giganteus Hitchcock p. 118
1889Brontozoum minusculum Hitchcock p. 126
1894Brontozoum minusculum Lyman p. 205
1894Brontozoum tuberatum Lyman p. 206
1898Brontozoum minusculum Hitchcock p. 401
1898Brontozoum tuberatum Hitchcock p. 401
1898Plesiornis giganteus Hitchcock p. 401
1902Eubrontes minusculus Hay p. 544
1902Eubrontes tuberatus Hay p. 544
1902Plesiornis giganteus Hay p. 550
1904Anchisauripus minusculus Lull p. 490 fig. 8
1904Anchisauripus tuberatus Lull p. 491 fig. 10
1915Anchisauripus minusculus Lull p. 185 fig. 42
1915Eubrontes tuberatus Lull p. 199
1917Anchisauripus minusculus Lull p. 114
1917Eubrontes tuberatus Lull p. 116
1927Anchisauripus minusculus Hitchcock and Grier p. 191
1930Anchisauripus minusculus Hay p. 3
1930Anchisauripus tuberatus Hay p. 3
1930Plesiornis giganteus Hay p. 19
1953Anchisauripus minusculus Lull p. 174
1953Eubrontes tuberatus Lull p. 183
1960Anchisauripus minusculus Young p. 61
1963Anchisauripus minusculus Kuhn p. 80
1963Plesiornis giganteus Kuhn p. 83
1963Eubrontes tuberatus Kuhn p. 84
1971Anchisauripus minusculus Haubold p. 65
1971Eubrontes tuberatus Haubold p. 75
1975Eubrontes tuberatus Sarjeant p. 296
1980Anchisauripus minuscolus Olsen p. 35
1984Grallator (Anchisauripus) minusculus Olsen and Galton p. 98 fig. 4
1986Anchisauripus minisculus Lockley p. 19
1990Anchisauripus minusculus Thulborn p. 149
1992Grallator minusculus Demathieu and Sciau p. 1562
1992Eubrontes minusculus Weems p. 124
1993Grallator minusculus Demathieu p. 232
1996Eubrontes minusculus Gierlinski p. 179
1999Eubrontes minusculus Gierlinski and Pienkowski p. 336
2000Anchisauripus minusculus Gand et al. p. 616
2002Grallator minusculus Demathieu et al. p. 12
2003Grallator minusculus Demathieu p. 59
2005Grallator minusculus Gand et al. p. 32
2008Grallator minusculus Bessedik et al. p. 18
2008Anchisauripus minusculus Fujita et al. p. 42
2012Grallator minusculus Moreau et al. p. 234
2014Grallator minusculus Moreau et al. p. 365
2017Grallator minusculus Moreau et al. p. 784
2018Eubrontes tuberatus Gand et al. p. 199
2018Grallator minusculus Moreau et al. p. 37
2019Grallator minusculus Moreau et al. p. 348
2020Grallator minusculus Bessedik et al. p. 34

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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
Sauropsida
RankNameAuthor
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Theropoda()
familyGrallatoridae
genusEubrontes
speciesminusculus()

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.

Eubrontes minusculus Hitchcock 1837
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Invalid names: Eubrontes tuberatus Hitchcock 1858 [synonym], Plesiornis giganteus Hitchcock 1889 [synonym]
Diagnosis
ReferenceDiagnosis
R. S. Lull 1915Pes: Length of digit I, 100 mm.; II, 158 mm.; III, 192 mm.; IV, 223 mm.; foot exclusive of hallux, 307 mm., including hallux, 374 mm. Divarication of digits I and II, 140°; II and III, 24°; II and IV, 24.5°.
Length of step 1,000 mm.
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: solitaryo
Environment: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: carnivoreo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2004-12-14 12:50:08
Modified: 2004-12-14 14:50:08
Source: o = order
Reference: Marsh 1875

Age range: base of the Norian to the top of the Early/Lower Bathonian or 228.00000 to 164.70000 Ma

Collections (22 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Triassic237.0 - 201.3USA (New Jersey) Brontozoum minusculum (91694)
Norian228.0 - 208.5USA (New Jersey) Anchisauripus minuscolus (187287)
Rhaetian - Early/Lower Hettangian208.5 - 196.5France (Occitanie) Grallator minusculus (206455)
Hettangian201.3 - 199.3Canada (Nova Scotia) Grallator minusculus (227833)
Hettangian201.3 - 199.3USA (Massachusetts) Anchisauripus minusculus (53024) Brontozoum tuberatum, Brontozoum minusculum (type locality: 52986) Eubrontes tuberatus (69798)
Hettangian201.3 - 199.3France (Region Midi-Pyrenees) Grallator minusculus (31307 31308)
Early/Lower Hettangian201.3 - 196.5Canada (Nova Scotia) Grallator minusculus (138978)
Late/Upper Hettangian201.3 - 196.5France (Languedoc-Roussillon) Theropoda indet. (140450)
Hettangian - Sinemurian201.3 - 190.8USA (Massachusetts) Anchisauripus minusculus (52994 52995 52996) Brontozoum minusculum (52985 52998 62844) Brontozoum tuberatum (52987 53025)
Hettangian - Sinemurian201.3 - 190.8USA (Connecticut) Plesiornis giganteus (53000)
Hettangian - Pliensbachian201.3 - 182.7USA (Arizona) Anchisauripus minusculus (225199)
Early/Lower Bathonian167.7 - 164.7France (Occitanie) Grallator minusculus (223714)