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Helodontiformes

Chondrichthyes - Helodontiformes

Synonymy list
YearName and author
2006Helodontiformes Nelson p. 43
2011Helodontiformes Long p. 242

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
RankNameAuthor
superclassGnathostomata
classChondrichthyes
subclassHolocephali(Bonaparte 1832)
orderHelodontiformes
orderHelodontiformes

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.

Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marinesubp
Locomotion: actively mobileo
Life habit: nektobenthico
Diet: carnivoreo
Created: 2009-07-21 06:36:22
Modified: 2009-07-21 08:36:22
Source: o = order, subp = subphylum
References: Wagner 2017, Carroll 1988, Hendy et al. 2009

Age range: base of the Chesterian to the top of the Wuchiapingian or 339.40000 to 254.17000 Ma

Collections (16 total)


Time interval Ma Country or state Original ID and collection number
Mississippian358.9 - 323.2United Kingdom Helodus lavissimus, Helodus turgidus, Helodus didymus, Helodus mammillaris, Helodus planus, Helodus rudis (132781)
Mississippian358.9 - 323.2USA (Indiana) Helodus incisus (133271)
Chesterian339.4 - 318.1Canada (Alberta) Helodus sp. (62384)
Pennsylvanian323.2 - 298.9United Kingdom Helodus simplex (137307)
Westphalian A - Westphalian B318.1 - 314.6USA (Arizona) Helodontidae indet. (92271)
Moscovian315.2 - 307.0United Kingdom Helodus simplex (137310 137312 137313)
Kasimovian307.0 - 303.7USA (Nebraska) Helodus rugosus (132967)
Artinskian290.1 - 279.3Greenland Helodus sp. (90246)
Roadian272.3 - 268.8Australia (Western Australia) Helodus sp. (90231)
Roadian272.3 - 268.8USA (Wyoming) Helodus subpolitus, Helodus rugosus (149346)
Wuchiapingian259.9 - 254.17USA (Wyoming) Helodus subpolitus (90235 90236 90237 90238)