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Pseudagnostus

Artiopoda - Agnostida - Diplagnostidae

Taxonomy
Pseudagnostus was named by Jaekel (1909) [Sepkoski's age data: Cm Dres-l Cm Fran-u Sepkoski's reference number: 16,80].

It was assigned to Pseudagnostidae by Robison and Pantoja-Alor (1968); to Diplagnostidae by Whittington et al. (1997); and to Agnostida by Sepkoski (2002).

Species
Litagnostus levisensis, Litagnostus meniscus, Pseudagnostina douvillei (syn. Pseudagnostina contracta), P. (Pseudagnostus), P. (Sulcatagnostus) dubius, P. (Sulcatagnostus) hunanensis, P. (Sulcatagnostus) rugosus, P. ampullatus, P. anhuiensis, P. benxiensis, P. bulgosus, P. canadensis (syn. Agnostus janei), P. chinensis, P. communis, P. cyclopyge, P. dividuus, P. gyps, P. idalis, P. josephus (syn. P. vigilax), P. karatauensis, P. koerferi, P. leptoplastorum, P. marginisulcatus, P. medius, P. mestus, P. obsurdus, P. papilio, P. planulatus, P. praecurrens, P. primus, P. prolongus (syn. Pseudagnostina vicaria), P. pseudangustilobus, P. pseudocyclopyge, P. punctatus, P. rajovopsis, P. securiger, P. sericatus, P. subquadratus, P. vastulus, Rhaptagnostus anhuiensis, Rhaptagnostus apsis, Rhaptagnostus auctor, Rhaptagnostus bifax, Rhaptagnostus changshanensis, Rhaptagnostus ciliensis, Rhaptagnostus convexiformis, Rhaptagnostus cyclopygeformis, Rhaptagnostus elix, Rhaptagnostus gunnari, Rhaptagnostus heteromorphus, Rhaptagnostus langyashanensis, Rhaptagnostus obsoletus, Rhaptagnostus plenus, Rhaptagnostus pseudoconvergens, Rhaptagnostus simplex
Species lacking formal opinion data
P. obesus, P. orbiculatus, P. rotundatus

Synonyms
Synonymy list
YearName and author
1909Pseudagnostus Jaekel
1936Rhaptagnostus Whitehouse
1937Sulcatagnostus Kobayashi
1944Litagnostus Rasetti
1962Pseudagnostina Palmer
1968Pseudagnostus Robison and Pantoja-Alor p. 780
1977Pseudagnostus (Pseudagnostina) Shergold
1989Pseudagnostus (Sulcatagnostus) Lu and Lin
1996Pseudagnostina Westrop et al. p. 820
1997Pseudagnostus Whittington et al. p. 366
1997Litagnostus Whittington et al. p. 368
2002Litagnostus Sepkoski
2002Pseudagnostina Sepkoski
2002Pseudagnostus Sepkoski
2002Rhaptagnostus Sepkoski
2002Sulcatagnostus Sepkoski
2009Rhaptagnostus Kiessling

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaGravenhorst 1843
RankNameAuthor
classArtiopodaHou and Bergstrom
orderAgnostidaSalter 1864
suborderAgnostinaSalter 1864
superfamilyCondylopygoideaRaymond 1913
familyDiplagnostidaeWhitehouse 1936
genusPseudagnostusJaekel 1909

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. †Pseudagnostus Jaekel 1909
show all | hide all
†Pseudagnostus canadensis Billings 1860
+
Invalid names: Agnostus janei Clark 1923 [synonym]
†Pseudagnostus communis Hall and Whitfield 1877
†Pseudagnostus cyclopyge Tullberg 1880
†Pseudagnostus dividuus Choi et al. 2004
†Pseudagnostus gyps Clark 1923
†Pseudagnostus idalis Opik 1967
+
Invalid names: Pseudagnostus vigilax Lu and Lin 1989 [synonym]
†Pseudagnostus karatauensis Ergaliev 1980
†Pseudagnostus koerferi Monke 1903
†Pseudagnostus leptoplastorum Westergard 1944
†Pseudagnostus medius Choi et al. 2004
†Pseudagnostus mestus Opik 1967
†Pseudagnostus obsurdus Ergaliev and Ergaliev 2008
†Pseudagnostus papilio Shergold 1971
†Pseudagnostus planulatus Raymond 1924
†Pseudagnostus praecurrens Ergaliev 1980
†Pseudagnostus primus Kobayashi 1935
†Pseudagnostus prolongus Hall and Whitfield 1877
+
Invalid names: Pseudagnostina vicaria Oepik 1967 [synonym]
†Pseudagnostus punctatus Ergaliev and Ergaliev 2008
†Pseudagnostus subquadratus Lu and Zhu 1980
†Pseudagnostus vastulus Whitehouse 1936
Invalid names: Litagnostus Rasetti 1944 [synonym], Pseudagnostina Palmer 1962 [synonym], Rhaptagnostus Whitehouse 1936 [synonym], Sulcatagnostus Kobayashi 1937 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Entire body: yesg
Adult length: 1.0 to < 10g
Adult width: 1.0 to < 10g
Spines: noneg
Locomotion: slow-movingo
Life habit: epifaunalo
Diet: detritivoreo
Vision: blindf
Created: 2009-02-25 10:11:19
Modified: 2009-02-25 12:11:19
Source: g = genus, f = family, o = order
References: Kiessling 2004, Hendy 2009

Age range: base of the Guzhangian to the top of the Migneintian or 500.50000 to 477.10000 Ma

Collections (573 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Cambrian538.8 - 486.85USA (Wisconsin) Litagnostus sp., P. sp. (250)
Cambrian538.8 - 486.85USA (Montana) P. sp. (258)
Miaolingian506.5 - 497.0China P. sp. (228206)
Middle Cambrian - Late/Upper Cambrian506.5 - 486.85USA (Alaska) P. sp. (114982)
Mayan504.5 - 499.5Kazakhstan (Balkhash) P. sp. (118221)
Marjumian504.5 - 497.0USA (Texas) P. nordicus (208618 208726 208750) P. sp. (78735)
Marjumian504.5 - 497.0USA (Alabama) Pseudagnostina contracta (75641) P. sp. (75643)
Wangcunian - Guzhangian504.5 - 497.0China (Hunan) P. quruqensis (128927)
Guzhangian500.5 - 497.0China (Hebei) P. douvillei (129587) P. sp. (129589) P. sp. 1 (129584)
Guzhangian500.5 - 497.0Spain P. sp. (197252)

Youngest occurrences
Time interval Ma Country or state PBDB collection number
Trempealeauan490.2 - 486.85Canada (Quebec) P. canadensis (8935 224133 224134) P. canadensis, P. gyps (224136 224140) P. canadensis, P. gyps, Litagnostus levisensis (224138) P. gyps (224139)
Trempealeauan490.2 - 486.85Canada (Yukon) Litagnostus planulatus (55285 55308 55310 55311 55312 55313) P. sp. (55305)
Gasconadian486.85 - 477.1USA (Texas) P. sp. (282)
Tremadocian486.85 - 477.1Canada (Newfoundland and Labrador) P. sp. (105854)
Tremadoc486.4 - 477.1Bolivia (Tarija) P. sp. (210709)
Tremadoc486.4 - 477.1Canada (Newfoundland and Labrador) P. sp. (78091)
Tremadoc486.4 - 477.1USA (Vermont) Litagnostus sp., P. sp. (277)
Tremadoc486.4 - 477.1Mexico (Oaxaca) Pseudagnostus indet. (9853) P. sp. (9843)
Tremadoc486.4 - 477.1USA (Texas) Litagnostus sp. (279)
Migneintian481.1 - 477.1United Kingdom (Shropshire) Litagnostus meniscus (75116)