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Juvenites
Taxonomy
Juvenites was named by Smith (1927) [Sepkoski's age data: Tr Olen-l Sepkoski's reference number: 302]. Its type is Juvenites kraffti.
It was assigned to Celtitidae by Smith (1927); to Paranannitidae by Spath (1934); to Ceratitida by Sepkoski (2002); to Melagathiceratidae by Tozer (1981), Tozer (1994), Brayard et al. (2013), Shigeta and Nguyen (2014); and to Meekoceratidae by Tongtherm et al. (2016).
It was assigned to Celtitidae by Smith (1927); to Paranannitidae by Spath (1934); to Ceratitida by Sepkoski (2002); to Melagathiceratidae by Tozer (1981), Tozer (1994), Brayard et al. (2013), Shigeta and Nguyen (2014); and to Meekoceratidae by Tongtherm et al. (2016).
Species
J. canadensis, J. dieneri, J. edelsteini, J. kraffti (type species), J. laevis, J. medius, J. multiconstractus, J. septentrionalis (syn. J. sanctorum), J. sinuosus (syn. J. kwangsianus, J. orientalis, J. procurvus, Anasibirites simplex), J. spathi (syn. Prosphingites kwangsianus), J. tenuicostatus, J. thermarum (syn. Prenkites depressus)
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1927 | Juvenites Smith |
| 1934 | Juvenites Spath |
| 1981 | Juvenites Tozer p. 90 |
| 1994 | Juvenites Tozer p. 53 |
| 2002 | Juvenites Sepkoski |
| 2013 | Juvenites Brayard et al. p. 165 |
| 2014 | Juvenites Shigeta and Nguyen p. 118 |
| 2016 | Juvenites Tongtherm et al. |
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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. †Juvenites Smith 1927
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†Juvenites canadensis Tozer 1961
†Juvenites dieneri Hyatt and Smith 1905
†Juvenites edelsteini Shevyrev 1990
†Juvenites kraffti Smith 1927
†Juvenites laevis Tozer 1994
†Juvenites medius Krafft and Diener 1909
†Juvenites multiconstractus Wang and Chen 1979
†Juvenites sinuosus Kiparisova 1947
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Invalid names: Anasibirites simplex Chao 1959 [synonym], Juvenites kwangsianus Chao 1959 [synonym], Juvenites orientalis Chao 1959 [synonym], Juvenites procurvus Brayard and Bucher 2008 [synonym]
†Juvenites tenuicostatus Dagis and Ermakova 1990
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 117 | 6.40 | 3.00 | 13.9 | 6.40 | 2.25 | |
| shell diameter | 117 | 17.6 | 7.40 | 33.4 | 18.1 | 5.45 | |
| shell inflation | 117 | 4.87 | 1.90 | 11.2 | 5.00 | 2.02 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Collections (125 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Triassic | USA (Idaho) | J. kraffti (33314) J. septentrionalis, J. dieneri (33286) J. septentrionalis, J. kraffti, J. dieneri (33285) | |
| Early/Lower Triassic | USA (Nevada) | J. dieneri (33313) | |
| Dienerian - Spathian | China | J. sp. (44006) | |
| Smithian | Tajikistan | J. edelsteini (97867 97868) | |
| Smithian | India (Himachal Pradesh) | J. procurvus (139623) | |
| Smithian | USA (Alaska) | J. septentrionalis (44415) J. sp., J. septentrionalis (44394) | |
| Smithian | Oman | J. procurvus (127388 127391) J. spathi (127390 127392 127393 127394 127396 127397 127398 127402 127430) J. thermarum (102600 127421 127425 127427) | |
| Smithian | Canada (Nunavut) | Paranannites spathi (103401) Prosphingites spathi (43848 61947) Thermalites canadensis (61943) | |
| Smithian | USA (Washington) | J. septentrionalis (110848) | |
| Smithian | Canada (British Columbia) | J. laevis (105193) Melagathiceras depressum (105197) | |
| Smithian | Svalbard and Jan Mayen | Prosphingites spathi (120231 120232 120298) | |
| Smithian | Afghanistan (Pakhtia) | J. septentrionalis (111022) J. sp. (44121) | |
| Smithian | USA (Utah) | J. spathi (156074) J. thermarum (156022 156023 156025 156053 156054) | |
| Smithian | Russian Federation (Primorye) | J. novikensis (47220) J. simplex (47204 47247 47248 47259) J. sp. (47205 47206 47207 47210 47211 47217) | |
| Smithian | USA (Nevada) | J. septentrigonalis (62097 62098) J. septentrigonalis, J. thermarum (62096) J. septentrionalis, J. thermarum (61515 97117 97119 97120 97121) J. sp., J. septentrionalis, J. thermarum (97118) | |
| Smithian | USA (Idaho) | J. kraffti (33292) J. septentrionalis, J. sanctorum, Thermalites thermarum, J. dieneri (33288) J. septentrionalis, Thermalites thermarum, Prenkites depressus, J. kraffti, J. dieneri (33293) | |
| Smithian | Vietnam | J. sinuosus (155500 155509) | |
| Smithian | China (Gunagxi) | J. globosus (44013) J. pakungensis, J. kwangsianus, Anasibirites simplex, J. septentrionalis (44009) | |
| Smithian | China (Guangxi) | J. kraffti (97142 97145 97149 97153) J. procurvus (97138 97139 97140 97157 97158 97197) J. sepentrionalis, J. orientalis (44015) Prosphingites kwangsianus (44002) | |
| Smithian | China (Xizang) | J. septentrionalis (229753 229759) J. septentrionalis, J. spathi (229761) J. sp. (229742 229743 229744) J. spathi (229716 229763 229764) Paranannites spathi (97334 97358) | |
| Smithian | Russian Federation | J. sinuosus (99538 144207 144208) J. sp. (168039 168042) J. tenuicostatus (107043) | |
| Smithian | Pakistan | J. kraffti (139166 139168) J. sp. (102307 111556 139161 139162 139164) | |
| Smithian | Mongolia | J. sp. (142564) | |
| Smithian | Japan (Tokyo-to) | J. sp. (44043) | |
| Smithian | USA (California) | Nannites dieneri (33298) | |
| Olenekian | India (Himachal Pradesh) | J. sp. (73226 73239 73242) | |
| Olenekian | Svalbard and Jan Mayen (Barentsøya) | Prosphingites spathi (212890) | |
| Olenekian | Norway (Svalbard) | J. spathi (218180 218181 218183 218184 218193) | |
| Olenekian - Anisian | Thailand | J. canadensis (211353) | |
| Spathian | China (Qinghai) | J. multiconstractus (102900) | |
| Spathian | China (Anhui) | J. sp. (149181) | |
| Spathian | Svalbard and Jan Mayen | Prosphingites spathi (212085 215028 215039) | |
| Spathian | Greece | Nannites medius (112607) |