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Isochirotherium

Reptilia - Chirotheriidae

Synonymy list
YearName and author
1971Isochirotherium Haubold p. 55
1972Isochirotherium Demathieu and Haubold p. 805
1974Isochirotherium Gand p. 9
1974Isochirotherium Haubold p. 39
1989Isochirotherium Demathieu p. 202
2000Isochirotherium Ptaszynski p. 164
2005Isochirotherium Gand and Demathieu p. 726
2021Isochirotherium Klein and Lucas p. 31

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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
RankNameAuthor
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
—Pseudosuchia(Zittel 1890)
familyChirotheriidaeAbel 1935
genusIsochirotherium

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.

G. †Isochirotherium Haubold 1971
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†Isochirotherium coltoni Peabody 1948
†Isochirotherium coureli Demathieu 1970
†Isochirotherium delicatum Courel and Demathieu 1976
†Isochirotherium felenci Courel and Demathieu 1976
†Isochirotherium gardettensis Petti et al. 2020
†Isochirotherium gierlinskii Ptaszynski 2000
†Isochirotherium herculis Egerton 1839
†Isochirotherium jenense Haubold 1970
†Isochirotherium lomasi Baird 1954
†Isochirotherium marshalli Peabody 1948
†Isochirotherium sanctacrucense Ptaszynski 1990
†Isochirotherium soergeli Haubold 1969
Diagnosis
ReferenceDiagnosis
H. Klein and S. G. Lucas 2021Narrow trackways of a quadruped with a pace angulation of ~165° and relatively strong outward rotation of the pentadactyl pes and manus imprints (20°-30° on average). Pedal digits II and III are longest, and digit IV is mostly as long as digit I and distinctly divergent from digit III. Basal pad of digit V close behind metatarsophalangeal area I–IV, and, in larger forms, progressively amalgamated with these. Distal phalangeal segment of digit V only weakly loaded. Very small manus-ratio of manus:pes area = 1:4.5-6.8. Digit III in the manus is longest.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Diet: carnivoresubo
Created: 2009-01-03 20:38:45
Modified: 2009-01-03 22:38:45
Source: subo = suborder, subc = subclass, c = class, subp = subphylum
References: Hendy et al. 2009, Benton 1983, Carroll 1988

Age range: base of the Olenekian to the top of the Ladinian or 251.20000 to 237.00000 Ma

Collections (41 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Triassic252.17 - 247.2United Kingdom (England) I. lomasi, I. bipedale (164930)
Early/Lower Triassic252.17 - 247.2Italy (Cuneo) I. sp., I. gardettensis (224578)
Triassic251.902 - 201.4United Kingdom (Cheshire) I. herculis (197337)
Spathian251.3 - 247.2USA (Arizona) Chirotherium coltoni (95107)
Spathian251.3 - 247.2Poland (Swietoryzskie) I. sanctacrucense, I. gierlinskii (118063)
Olenekian251.2 - 247.2Morocco (Marrakech-Tensift-Al Haouz) I. gierlinskii (149976)
Aegean - Bithynian247.2 - 242.0USA (Arizona) Chirotherium marshalli (52806)
Anisian247.2 - 242.0Poland (Swietoryzskie) I. soergeli, I. herculis (175801)
Anisian247.2 - 242.0United Kingdom (Cheshire) I. sp. (197358)
Anisian247.2 - 242.0Morocco (Marrakech-Safi) I. coureli (199858 199908)
Anisian247.2 - 242.0Spain (Aragon) I. coureli (199856)
Anisian247.2 - 242.0United Kingdom (England) I. sp. (80838)
Anisian247.2 - 242.0Italy (Trentino-Alto Adige) I. delicatum (194584)
Illyrian247.2 - 242.0Italy (Trentino-Alto Adige) I. sp. (196816)
Illyrian247.2 - 242.0Italy I. delicatum (154341)
Anisian - Ladinian247.2 - 237.0France (Bourgogne-Franche-Comté) I. circademathieui (68226) I. coureli (199928) I. sp. (62182 199910) I. sp., I. delicatum (28462)
Anisian - Ladinian247.2 - 237.0France (Auvergne-Rhône-Alpes) Chirotherium coureli (201284) I. demathieui (31310) I. felenci, I. delicatum (192151)
Middle Triassic247.2 - 237.0France (Auvergne-Rhône-Alpes) Chirotherium coureli (201285)
Middle Triassic247.2 - 237.0France ( Bourgogne-Franche-Comté) Chirotherium coureli (201287)
Middle Triassic247.2 - 237.0France (Bourgogne-Franche-Comté) Chirotherium coureli (201286) I. sp. (28092)
Ladinian242.0 - 237.0Argentina (Mendoza) I. coureli (219953)
Ladinian242.0 - 237.0United Kingdom (Scotland) I. herculis (181936 181937 181938 181939 181940 181941 181942 181943 181944 181945 181946 181947)