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Echinodon becklesii

Reptilia - Heterodontosauridae

Taxonomy
Echinodon becklesii was named by Owen (1861). Its type specimen is BMNH 48209, 48210, a mandible, and it is a 3D body fossil. Its type locality is cliff face, Durlston Bay, which is in a Berriasian fluvial-lacustrine limestone in the Lulworth Formation of the United Kingdom. It is the type species of Echinodon.

It was recombined as Saurechinodon becklesii by Kuhn (1964); it was misspelled as Echinodon becklesi by Charig (1967), Macfadyen (1970), Thulborn (1975), Galton (1978), Galton (1981), Weishampel and Weishampel (1983), Sereno (1991), Olshevsky and Ford (1994), Galton (1994), Pereda Suberbiola and Galton (2001), Norman and Barrett (2002), Norman et al. (2004), Pereda Suberbiola et al. (2006), Sánchez-Hernández et al. (2007), Naish and Martill (2007), Galton (2007), Butler et al. (2008), Naish and Martill (2008), Butler and Galton (2008), Galton (2009), Sereno (2012), Hübner (2016) and Dieudonné et al. (2020).

Synonymy list
YearName and author
1861Echinodon becklesii Owen pp. 35-39
1882Echinodon becclesii Quenstedt p. 186
1888Echinodon becklesii Lydekker p. 247
1888Echinodon becklesii Mansel-Pleydell p. 8
1890Echinodon becklesi Woodward and Sherborn p. 227
1890Echinodon becclesi Zittel p. 742
1900Echinodon becklesi Van Den Broeck p. 85
1901Echinodon becclesi Nopcsa p. 214
1915Echinodon becklesii Hennig p. 10
1960Echinodon becklesi Delair p. 84
1964Saurechinodon becklesii Kuhn p. 37
1967Echinodon becklesi Charig p. 715
1970Echinodon becklesi Macfadyen p. 143
1975Echinodon becklesii Thulborn p. 99
1978Echinodon becklesii Galton p. 155
1981Echinodon becklesii Galton p. 35
1983Echinodon becklesii Weishampel and Weishampel p. 44
1991Echinodon becklesii Sereno p. 176
1994Echinodon becklesii Galton p. 256
1994Echinodon becklesii Olshevsky and Ford p. 91
2001Echinodon becklesii Pereda Suberbiola and Galton p. 152
2002Echinodon becklesii Norman and Barrett p. 172
2004Echinodon becklesii Norman et al. p. 394
2006Echinodon becklesi Pereda Suberbiola et al. p. 228
2007Echinodon becklesii Galton p. 27 fig. 2.7
2007Echinodon becklesii Naish and Martill p. 495
2007Echinodon becklesii Sánchez-Hernández et al. p. 201
2008Echinodon becklesii Butler and Galton p. 641
2008Echinodon becklesii Butler et al. p. 9
2008Echinodon becklesii Naish and Martill p. 613
2009Echinodon becklessii Galton p. 216
2012Echinodon becklesii Sereno p. 31
2016Echinodon becklesii Hübner p. 322
2020Echinodon becklesii Dieudonné 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
—Sauropsida
RankNameAuthor
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Ornithischia()
familyHeterodontosauridae
genusEchinodon
speciesbecklesii

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.

†Echinodon becklesii Owen 1861
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Diagnosis
ReferenceDiagnosis
R. J. Butler et al. 2008One, or possibly two, caniniform teeth situated at the anterior end of the maxilla.
P. C. Sereno 2012Heterodontosaurid ornithischian characterized by the follow- ing six autapomorphies: (1) slender, nearly straight caniniform first maxillary tooth with unornamented anterior and posterior carinae; (2) edentulous anterior dentary margin (as long as two alveoli); (3) only 9 dentary teeth posterior to the caniniform tooth; (4) dentary crowns in the middle of the tooth row that are proportionately taller than opposing maxillary crowns (the apical 50% of middle dentary crowns are den- ticulate versus 25% of mid maxillary crowns); (5) anteroposteriorly elongate dentary symphysis (maximum length approximately 3 times maximum depth); (6) symphyseal flange ventral to primary dentary symphysis.
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 06:10:07
Modified: 2005-08-25 08:10:07
Source: g = genus, o = order
References: Marsh 1875, Peczkis 1995

Age range: Middle Berriasian or 145.00000 to 140.20000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Berriasian - Middle Berriasian145.0 - 140.2United Kingdom (England) Echinodon becklesii (28401)
Middle Berriasian145.0 - 140.2United Kingdom (England) Echinodon becklesii (type locality: 45330 52312)