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Helodus

Chondrichthyes - Helodontiformes - Helodontidae

Synonymy list
YearName and author
1838Helodus Agassiz p. 104
1889Helodus Woodward p. 171
1902Helodus Hay p. 286
1963Helodus Jordan p. 594
2002Helodus Sepkoski
2006Helodus Nelson p. 43

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
RankNameAuthor
superclassGnathostomata
classChondrichthyes
subclassHolocephali(Bonaparte 1832)
orderHelodontiformes
familyHelodontidae
genusHelodus

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. †Helodus Agassiz 1838
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Helodus angulatus Newberry and Worthen 1866
Helodus biformis Newberry and Worthen 1866
Helodus carbonarius Newberry and Worthen 1866
Helodus coniculus Newberry and Worthen 1866
Helodus consolidatus Newberry and Worthen 1866
Helodus crenulatus Newberry and Worthen 1866
Helodus denshumani Newberry and Worthen 1866
Helodus denticulatus Newberry and Worthen 1866
Helodus didymus Agassiz 1843
Helodus elytra Newberry and Worthen 1866
Helodus gibberulus Agassiz 1836
Helodus gibbus Leidy 1857
Helodus incisus Eastman 1903
Helodus laevis Newberry 1879
Helodus limax Newberry and Worthen 1866
Helodus mammillaris Agassiz 1843
Helodus planus Agassiz 1843
Helodus politus Newberry and Worthen 1866
Helodus rudis M'Coy 1848
Helodus rugosus Newberry and Worthen 1870
Helodus simplex Agassiz 1838
Helodus subpolitus Branson 1916
Helodus subteres Agassiz 1836
Helodus sulcatus Newberry and Worthen 1866
Helodus undulatus Newberry and Worthen 1866
Helodus wortheni Hay 1899
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: Hendy et al. 2009, Carroll 1988, Wagner 2023

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

Collections (18 total)


Time interval Ma Country or state Original ID and collection number
Mississippian358.9 - 323.2USA (Indiana) H. incisus (133271)
Mississippian358.9 - 323.2United Kingdom H. lavissimus, H. didymus, H. mammillaris, H. planus, H. rudis (132781)
Chesterian339.4 - 318.1Canada (Alberta) H. sp. (62384)
Pennsylvanian323.2 - 298.9United Kingdom H. simplex (137307)
Moscovian315.2 - 307.0United Kingdom H. simplex (137310 137312 137313)
Kasimovian307.0 - 303.7USA (Nebraska) H. rugosus (132967)
Kasimovian307.0 - 303.7USA (Illinois) H. sp. (224241)
Permian298.9 - 252.17USA (Oklahoma) H. sp. (221391)
Artinskian290.1 - 279.3Greenland H. sp. (90246)
Roadian272.3 - 268.8USA (Wyoming) H. subpolitus, H. rugosus (149346)
Roadian272.3 - 268.8Australia (Western Australia) H. sp. (90231)
Wuchiapingian259.9 - 254.17Lithuania H. sp. (222506)
Wuchiapingian259.9 - 254.17USA (Wyoming) H. subpolitus (90235 90236 90237 90238)