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Polyplacognathus

Cyclostomi - Conodontophorida - Polyplacognathidae

Taxonomy
Polyplacognathus was named by Stauffer (1935) [Sepkoski's age data: O Cara-m O Cara-u Sepkoski's reference number: 867].

It was assigned to Balognathidae by Stouge (1984); to Conodontophorida by Sepkoski (2002); and to Polyplacognathidae by Stouge and Bagnoli (1999), Mestre and Heredia (2013), Mestre and Heredia (2020).

Species
P. angarense, P. jianyeensis
Species lacking formal opinion data
P. petaloideus, P. ramosa, P. ramosus, P. rutriformis
Entered
by J. Sepkoski on 2003-01-23; modified by P. Wagner on 2021-03-22

Synonymy list
YearName and author
1935Polyplacognathus Stauffer
1984Polyplacognathus Stouge p. 71
1999Polyplacognathus Stouge and Bagnoli p. 156
2002Polyplacognathus Sepkoski
2013Polyplacognathus Mestre and Heredia p. 47
2020Polyplacognathus Mestre and Heredia p. 738

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
classCyclostomi(Duméril 1806)
subclassCyclostomata(Richards)
RankNameAuthor
orderConodontophorida
classConodontaPander 1856
orderPrioniodontida(Dzik 1976)
superfamilyPrioniodontaceaBassler 1925
familyPolyplacognathidaeBergström 1981
genusPolyplacognathusStauffer 1935

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. †Polyplacognathus Stauffer 1935
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†Polyplacognathus angarense Moskalenko 1984
†Polyplacognathus jianyeensis An and Ding 1982
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: hydroxyapatitec
Locomotion: actively mobilec
Life habit: nektonicc
Diet: carnivorec
Vision: well-developedc
Created: 2005-02-03 07:48:42
Modified: 2010-02-12 04:00:46
Source: c = class
Reference: Aberhan 1992

Age range: base of the Abereiddian to the top of the Maysvillian or 468.00000 to 449.60000 Ma

Collections (34 total)


Time interval Ma Country or state Original ID and collection number
Middle Ordovician471.3 - 458.2USA (New York) P. sp. (333 334 335)
Chazyan471.3 - 457.3USA (Tennessee) P. sp. (308)
Whiterockian471.3 - 457.3USA (Nevada) P. rutriformis (210656 210657 210659)
Darriwilian469.4 - 458.2Russian Federation (Siberia) P. petaloideus (206301)
Darriwilian469.4 - 458.2China (HeBei) P. sp. (7955)
Darriwilian469.4 - 458.2Russian Federation P. angarense (231580 234935)
Abereiddian468.0 - 461.1Kazakhstan P. sp. (165486 165487)
Early/Lower Llandeilo461.1 - 458.2China (Hubei) P. sp. (4711)
Early/Lower Llandeilo461.1 - 458.2Russian Federation (Siberia) P. sp. (9301)
Late/Upper Llandeilo461.1 - 458.2Russian Federation (Siberia) P. sp. (9297 9304 9308)
Late/Upper Llanvirn461.1 - 458.2Russian Federation (Siberia) P. sp. (9227 9230)
Middle Llandeilo - Late/Upper Llandeilo461.1 - 458.2China (Hubei) P. sp. (4710)
Turinian457.3 - 453.8USA (Missouri) P. ramosus (176649)
Blackriveran457.3 - 449.6USA (Oklahoma) P. sp. (23985)
Blackriveran - Shermanian457.3 - 449.6USA (Minnesota) P. ramosus (23295 23298)
Blackriveran - Shermanian457.3 - 449.6USA (Iowa) P. ramosus (23300)
Longvillian457.2 - 455.0China (JiangSu) P. sp. (7931 7948)
Chatfieldian453.8 - 451.0USA (New York) P. ramosa (76089 76090)
Katian452.8 - 445.2USA (Oklahoma) P. ramosus (212663 212664 212665)
Edenian - Maysvillian451.0 - 449.6Canada (Northwest Territories) P. ramosus (27086)