Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Semiacontiodus

Conodonta - Protopanderodontida - Oneotodontidae

Taxonomy
Semiacontiodus is a genus. It is not extant.

It was assigned to Euconodonta by Rasmussen (2001); to Oneotodontidae by Pyle and Barnes (2002); and to Conodontophorida by Sepkoski (2002).

Species
S. cornuformis, S. iowensis
Species lacking formal opinion data
S. nogamii

Synonymy list
YearName and author
2001Semiacontiodus Rasmussen p. 130
2002Semiacontiodus Pyle and Barnes p. 70
2002Semiacontiodus Sepkoski

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
RankNameAuthor
subphylumConodontophorida()
classConodontaPander 1856
orderProtopanderodontida
familyOneotodontidaeMiller 1980
genusSemiacontiodus

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.

show all | hide all
†Semiacontiodus cornuformis Sergeeva 1963
†Semiacontiodus iowensis Fürnish 1938
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 Tremadoc to the top of the Haljala or 486.50000 to 453.90000 Ma

Collections (107 total)


Time interval Ma Country or state Original ID and collection number
Cambrian538.8 - 485.4China (Jilin Provence) S. nogamii (156917 156918)
Cambrian538.8 - 485.4Norway (Naersnes) S. nogamii (156964)
Furongian497.0 - 485.4South Korea S. nogamii (203748 203751 203753)
Merioneth497.0 - 485.4USA (Vermont) S. sp. (6870 6871)
Trempealeauan492.5 - 485.4Canada (Alberta) S. nogami (203778 203781 203782 203784 203785) S. sp. (203783)
Trempealeauan492.5 - 485.4USA (Virginia) S. nogamii (203867)
Trempealeauan492.5 - 485.4Canada (Nunuvat) S. nogamii (203791 203792) S. sp. A, Acontiodus iowensis (203793)
Trempealeauan492.5 - 485.4Canada (Newfoundland and Labrador) S. nogamii (203839)
Trempealeauan492.5 - 485.4USA (New York) S. nogamii (89244)
Trempealeauan - Gasconadian492.5 - 477.7Canada (Quebec) S. sp. (105866)
Batyrbaian - Tremadocian491.5 - 477.7Russian Federation (Siberia) S. sp. (205624)
Niuchehean489.5 - 485.4China (Jilin Provence) S. nogamii (156916 156928)
Skullrockian487.5 - 482.3USA (New York) S. iowensis (87524)
Tremadoc486.5 - 477.7Argentina S. sp. (204252 204253)
Tremadoc486.5 - 477.7USA (Virginia) Acontiodus iowensis (203863)
Tremadoc486.5 - 477.7China (Hubei) S. sp. (4738 4740)
Tremadoc486.5 - 477.7South Korea (Kangweondo) Acontiodus iowensis (203853)
Tremadoc486.5 - 477.7Iran S. sp. (116238)
Tremadoc486.5 - 477.7Russian Federation (Siberia) S. sp. (9232 9271)
Gasconadian485.4 - 477.7USA (New Mexico) S. lavadamensis (203895 203896) S. nogamii (203894)
Gasconadian485.4 - 477.7USA (Virginia) S. nogamii (203864)
Tremadocian485.4 - 477.7Russian Federation (Siberia) S. sp. (205623)
Tremadocian485.4 - 477.7USA (New York) S. iowensis (174039 174040 174041 174044 174046 174047)
Ordovician485.4 - 443.8China (Jilin Provence) S. nogamii (156931)
Hunneberg481.1 - 474.8Estonia (Harju) S. spp. (203647)
Hunneberg - Kunda481.1 - 464.3Russian Federation (Yaroslavl oblast) S. davidi, S. cornuformis (235856)
Arenig478.6 - 466.0Argentina S. sp. (8746 8875)
Floian - Darriwilian477.7 - 458.4Russian Federation (Siberia) S. mufushanensis (205664)
Billingen474.8 - 471.1Estonia (Harju) S. spp. (203644 203645 203646)
Volkhov471.1 - 469.2Russian Federation S. sp. (61798 61800)
Volkhov471.1 - 469.2Sweden (Kalmar) S. corniformis (99481)
Volkhov471.1 - 469.2Estonia (Harju) S. cornuformis (203618 203619 203620 203621) S. sp. A (203634 203635 203637 203638) S. spp., S. sp. A (203636)
Volkhov - Kunda471.1 - 464.3Sweden S. davidi (203655 203656 203657)
Kunda469.2 - 464.3Estonia Scolopodus cornuformis (56202)
Kunda469.2 - 464.3Russian Federation (Novgorod Oblast) S. davidi (235857)
Kunda - Aseri469.2 - 460.9Russian Federation (Kostroma oblast) S. davidi, S. cornuformis (235820)
Darriwilian467.3 - 458.4Argentina S. potrerillensis (210373 210374 210376 210377 210378 210388 210390 210391 210392 210416 210420 210423 210453 210459 210460)
Aluoja - Aseri466.0 - 460.9Sweden S. cornuformis (210643 210644) S. davidi, S. cornuformis (210645 210646 210647 210650 210651 210652)
Aseri463.5 - 460.9Estonia Scolopodus cornuformis (56200)
Lasnamagi463.5 - 460.9Lithuania S. cornuformis (210665)
Lasnamagi463.5 - 460.9Estonia Scolopodus cornuformis (56203) S. cornuformis (210664 210675)
Aseri - Uhaku463.5 - 458.0Russian Federation S. carinatus, S. cornuformis (235848)
Kukruse458.0 - 456.8Sweden (southern Gotland) S. sp. (183444 183445)
Kukruse458.0 - 456.8Estonia (Kohtla-Nõmme) S. carinatus (168527)
Haljala456.8 - 453.9Sweden (southern Gotland) S. sp. (183447 183448 183449)