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Richardoestesia isosceles

Reptilia - Dromaeosauridae

Taxonomy
Richardoestesia isosceles was named by Sankey (2001). Its type specimen is LSUMGS 489:6238, a tooth, and it is a 3D body fossil. Its type locality is LSUMG 489, Talley Mountain, which is in a Campanian/Campanian channel lag conglomerate in the Aguja Formation of Texas.

It was synonymized subjectively with Richardoestesia gilmorei by Longrich (2008).

Synonymy list
YearName and author
2001Richardoestesia isosceles Eberth et al. p. 58
2001Richardoestesia isosceles Sankey
2002Richardoestesia isosceles Sankey et al. p. 757
2003Richardoestesia isosceles Williamson et al. p. 110A
2004Richardoestesia isosceles Holtz, Jr. et al. p. 77
2005Richardoestesia isosceles Sankey et al. p. 142
2009Richardoestesia isosceles Knoll and Ruiz-Omeñaca p. 609
2011Richardoestesia isosceles Carbot-Chanona and Rivera-Sylva p. 395
2013Richardoestesia isosceles Sues and Averianov p. 311
2014Richardoestesia isosceles Hendrickx and Mateus p. 29
2014Richardoestesia isosceles Rivera-Sylva and Carpenter p. 150
2014Richardoestesia isosceles Williamson and Brusatte p. 14
2015Richardoestesia isosceles Currie and Koppelhus p. 626
2018Richardoestesia isosceles Brownstein p. 1125
2018Richardoestesia isosceles Frederickson et al. p. 4

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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
—Diapsida()
RankNameAuthor
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Theropoda()
—Neotheropoda
—AverostraPaul 2002
—Tetanurae
—Coelurosauria()
—Maniraptora
—Paraves
infraorderDeinonychosauria
familyDromaeosauridae
genusRichardoestesia
speciesisosceles

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.

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Diagnosis
No diagnoses are available
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: terrestrialf
Locomotion: actively mobileo
Life habit: ground dwellingf
Diet: carnivoref
Reproduction: oviparousf
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2005-09-11 17:04:18
Modified: 2005-09-11 19:04:18
Source: f = family, o = order
References: Marsh 1875, Holtz et al. 2000

Age range: base of the Early/Lower Cenomanian to the top of the Lancian or 99.60000 to 66.00000 Ma

Collections (51 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Cenomanian99.6 - 93.5USA (Utah) Richardoestesia isosceles (73612)
Judithian83.5 - 70.6USA (Wyoming) Richardoestesia isosceles (14458 14465)
Judithian83.5 - 70.6USA (Texas) Richardoestesia isosceles (14488)
Late/Upper Campanian83.5 - 70.6USA (New Mexico) Richardoestesia isosceles (154661)
Late/Upper Campanian83.5 - 70.6Canada (Alberta) Richardoestesia isosceles (52991 53049 76030 76752 77259) Richardoestesia sp. (22697)
Middle Campanian83.5 - 70.6Canada (Alberta) Aves indet. (45566) Richardoestesia isosceles (152279)
Middle Campanian - Late/Upper Campanian83.5 - 70.6Canada (Alberta) Richardoestesia isosceles (45819)
Middle Campanian - Late/Upper Campanian83.5 - 70.6USA (Texas) Richardoestesia isosceles (68001 68002 68006 68007 68008) Richardoestesia isosceles, Richardoestesia gilmorei (type locality: 68003)
Maastrichtian72.1 - 66.0USA (North Dakota) Richardoestesia isosceles (45113)
Maastrichtian72.1 - 66.0USA (South Dakota) Richardoestesia isosceles (45391)
Maastrichtian72.1 - 66.0USA (Montana) Richardoestesia isosceles (85498 85499)
Lancian70.6 - 66.0USA (North Dakota) Richardoestesia isosceles (14610)
Lancian70.6 - 66.0USA (Montana) Richardoestesia isosceles (14525 14535 14546 14549 14616 14624)
Late/Upper Maastrichtian70.6 - 66.0USA (South Dakota) Richardoestesia isosceles (45390)
Late/Upper Maastrichtian70.6 - 66.0Canada (Alberta) Tyrannosauridae indet. (14569)
Late/Upper Maastrichtian70.6 - 66.0USA (North Dakota) Richardoestesia isosceles (45098 45099 45102 45109 45110 45111 45112 45114 45118 45120 45122 45130 45136 45144 45299)
Late/Upper Maastrichtian70.6 - 66.0USA (Wyoming) Richardoestesia isosceles (14585 137798)
Late/Upper Maastrichtian70.6 - 66.0USA (Montana) Richardoestesia isosceles (183109)