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Agerina

Trilobita - Corynexochida - Leiostegiidae

Taxonomy
Agerina was named by Tjernvik (1956) [Sepkoski's age data: O Trem O Cara-l Sepkoski's reference number: 2,378,795]. It is not extant. Its type is Agerina erratica.

It was assigned to Proetida by Sepkoski (2002); and to Leiostegiidae by Jell and Adrain (2002) and Zhou and Zhou (2019).

Species
A. acutilimbata, A. clymene, A. elongata, A. erratica (type species), A. ferrigena, A. parva, A. quadrata
Species lacking formal opinion data
A. laurentica, A. palabunda

Synonyms
Synonymy list
YearName and author
1956Agerina Tjernvik
1983Hexianella Zhang
1987Plesiyuepingia Xiang and Zhou
2002Agerina Jell and Adrain p. 338
2002Agerina Sepkoski
2002Hexianella Sepkoski
2002Plesiyuepingia Sepkoski
2019Agerina Zhou and Zhou p. 151

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
orderCorynexochida
suborderLeiostegiinaBradley 1925
superfamilyLeiostegioideaBradley 1925
familyLeiostegiidaeBradley 1925
genusAgerinaTjernvik 1956

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. †Agerina Tjernvik 1956
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†Agerina acutilimbata Ghobadi Pour et al. 2011
†Agerina clymene Mergl 2006
†Agerina elongata Lu 1975
†Agerina erratica Tjernvik 1956
†Agerina ferrigena Ruzicka 1926
†Agerina parva Xiang and Zhou 1987
†Agerina quadrata Dean 1966
Invalid names: Hexianella Zhang 1983 [synonym], Plesiyuepingia Xiang and Zhou 1987 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: actively mobileo
Life habit: nektobenthico
Diet: carnivoreo
Vision: well-developedf
Created: 2009-12-14 06:30:50
Modified: 2009-12-14 08:30:50
Source: f = family, o = order, c = class
References: Aberhan et al. 2004, Hendy et al. 2009, Whittington et al. 1997

Age range: base of the Arenigian to the top of the Caradoc or 478.60000 to 449.50000 Ma

Collections (52 total)


Time interval Ma Country or state Original ID and collection number
Tremadoc486.5 - 477.7Sweden A. praematura (3108) A. sp. (3107)
Tremadoc486.5 - 477.7Czech Republic A. clymene (223845) A. ferrigena, A. clymene (192830)
Tremadocian485.4 - 477.7Czech Republic A. ferrigena (229958)
Tremadocian485.4 - 477.7Morocco (Anti-Atlas) A. sp. (166727)
Arenigian478.6 - 468.1China (Shaanxi) A. sp. (116178)
Arenigian478.6 - 468.1China (Hubei) A. elongata (116199 116201 116202 116203) A. sp. (116204)
Arenigian478.6 - 468.1China (Hunan) A. sp. (116206 116207 116209 116210 116221)
Arenig478.6 - 466.0Sweden A. sp. (3196)
Floian477.7 - 470.0China (Hubei) A. elongata (203695 203696) A. parva (221218)
Floian477.7 - 470.0Morocco (Anti Atlas) A. quadrata (166726)
Billingen474.8 - 471.1Sweden A. erratica (192904 198163 198168)
Langevoja471.8 - 469.2Sweden A. sp. (198068 198071 198077 198096 198101 198106)
Valaste471.8 - 466.0Sweden A. sp. (198032)
Volkhov471.1 - 469.2Russian Federation A. sp. (157085 157086 157106 157130) A. sp., A. woehrmanni (157102 157105 157111) A. woehrmanni (157104 157107 157115 157117)
Volkhov471.1 - 469.2Sweden A. sp. (198124 198156)
Castlemainian - Yapeenian470.0 - 467.3Ireland A. palabunda (153922)
Dapingian470.0 - 467.3China (Hubei) A. elongata (116200) A. parva (221223)
Kunda469.2 - 464.3Russian Federation A. woehrmanni (157143)
Llandeilo - Caradoc461.1 - 449.5Canada (Northwest Territories) A. norrisi (316)
Katian453.0 - 445.2Kazakhstan A. acutilimbata (162197 162198)