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Apatopus lineatus

Reptilia - Parasuchidae

Taxonomy
Otozoum lineatus was named by Bock (1952). It is considered to be a form taxon. Its type specimen is LC S490, MCZ 212, a footprint, and it is a trace fossil. Its type locality is Smith Clark's quarry, Milford (level B), which is in a Norian terrestrial shale/sandstone in the Passaic Formation of New Jersey. It is the type species of Apatopus.

It was recombined as Apatopus lineatus by Baird (1957), Kuhn (1958), Kuhn (1963), Haubold (1971), Olsen (1980), Biron and Dutuit (1981), Olsen and Baird (1986), Conrad et al. (1987), Rainforth (2003), Rainforth (2007), Lagnaoui et al. (2012) and Klein and Lucas (2021).

Synonymy list
YearName and author
1952Otozoum lineatus Bock pp. 408-409 figs. Pl. 46, 48
1957Apatopus lineatus Baird p. 486 figs. 7, 8
1958Apatopus lineatus Kuhn p. 21
1963Apatopus lineatus Kuhn p. 77
1971Apatopus lineatus Haubold p. 59
1980Apatopus lineatus Olsen p. 28
1981Apatopus lineatus Biron and Dutuit p. 413
1986Apatopus lineatus Olsen and Baird p. 21
1987Apatopus lineatus Conrad et al. p. 131
2003Apatopus lineatus Rainforth p. 818
2007Apatopus lineatus Rainforth p. 55
2012Apatopus lineatus Lagnaoui et al. p. 240
2021Apatopus lineatus Klein and Lucas p. 50–51

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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()
RankNameAuthor
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
Pseudosuchia(Zittel 1890)
Phytosauria(Jaeger 1828)
familyParasuchidaeLydekker 1885
genusApatopus
specieslineatus(Bock 1952)

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.

Apatopus lineatus Bock 1952
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Diagnosis
ReferenceDiagnosis
D. Baird 1957Quadrupedal trackway with pace angulation about 108°, pes but not manus toed-out. Feet pentadactyl with well-developed articular swellings and sharp claws; manus short and symmetrically radiate, pes long and narrow with digits in order of increasing length V-I-II-III-IV.
H. Klein and S. G. Lucas 2021Trackways of a quadruped with pace angulation of the pes ranging from 108° to 120°. Pes, but not manus, toed out. Pes long and narrow, semiplantigrade to plantigrade, pentadactyl with slender digits increasing in length from I to IV. Digit IV often very faintly impressed or missing; digit V straight, antero-laterally oriented and with posteriorly-elongated “heel.” Digits with well-developed articular swellings and sharp claws. Manus pentadactyl, semiplantigrade, short, rounded and symmetrical around digit III, which is longest; manus positioned in the trackway anterior to or slightly medial to the pes.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Diet: carnivoresubo
Created: 2009-01-03 20:38:18
Modified: 2009-01-03 22:38:18
Source: subo = suborder, subc = subclass, c = class, subp = subphylum
References: Hendy et al. 2009, Carroll 1988, Benton 1983

Age range: base of the Tuvalian to the top of the Rhaetian or 232.00000 to 201.30000 Ma

Collections (12 total)


Time interval Ma Country or state Original ID and collection number
Carnian237.0 - 228.0USA (North Carolina) Apatopus lineatus (55526)
Carnian237.0 - 228.0Germany (Bavaria) Apatopus lineatus (195708)
Carnian237.0 - 228.0Morocco (Marrakesh-Tensift-El Haouz) Apatopus lineatus (219917)
Carnian237.0 - 228.0Morocco (Marrakech-Safi) Apatopus lineatus (195710 205547)
Tuvalian232.0 - 221.5Germany Apatopus lineatus (153474)
Tuvalian232.0 - 221.5Germany (Bavaria) Apatopus lineatus (195709)
Norian228.0 - 208.5USA (New Jersey) Anomoepus minor, Polemarchus gigas (type locality: 46622) Apatopus sp. (55412)
Norian228.0 - 208.5USA (New York) Apatopus lineatus (57917)
Lacian - Alaunian221.5 - 212.0USA (Virginia) Apatopus lineatus (68889)
Rhaetian208.5 - 201.3USA (Utah) Apatopus sp. (57063)