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Frechites
Taxonomy
Frechites was named by Smith (1932) [Sepkoski's age data: Tr Anis-u Tr Ladi-l Sepkoski's reference number: 302]. Its type is Ceratites humboldtensis.
It was assigned to Ceratitidae by Spath (1934); to Beyrichitinae by Tozer (1981) and Tozer (1994); and to Ceratitida by Sepkoski (2002).
It was assigned to Ceratitidae by Spath (1934); to Beyrichitinae by Tozer (1981) and Tozer (1994); and to Ceratitida by Sepkoski (2002).
Species
F. bisulcatus, F. chischa, F. chischeformis, F. darkiensis, F. hamatus, F. kindlei, F. laqueatus (syn. Ceratites nathorsti, Ceratites geminatus), F. lenaensis, F. nevadanus (syn. Ceratites emmonsi, Ceratites humboldtensis, Ceratites (Gymnotoceras) hersheyi, Ceratites cornutus), F. occidentalis (syn. Ceratites gilberti, Ceratites applanatus, Ceratites altilis, Ceratites rotuloides, Ceratites (Hollandites) organi, Ceratites karpinskyi, Ceratites (Gymnotoceras) spurri, Ceratites pilatus)
Synonymy list
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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. †Frechites Smith 1932
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†Frechites bisulcatus Popov 1961
†Frechites chischa Tozer 1967
†Frechites chischeformis Konstantinov 1991
†Frechites darkiensis Arkadiev and Vavilov 1989
†Frechites hamatus Tozer 1994
†Frechites kindlei McLearn 1946
†Frechites laqueatus Lindstroem 1865
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Invalid names: Ceratites geminatus Mojsisovics 1886 [synonym], Ceratites nathorsti Mojsisovics 1886 [synonym]
†Frechites lenaensis Konstantinov 1991
†Frechites nevadanus Mojsisovics 1888
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Invalid names: Ceratites (Gymnotoceras) hersheyi Smith 1914 [synonym], Ceratites cornutus Smith 1914 [synonym], Ceratites emmonsi Smith 1914 [synonym], Ceratites humboldtensis Hyatt and Smith 1905 [synonym]
†Frechites occidentalis Smith 1914
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Invalid names: Ceratites (Gymnotoceras) spurri Smith 1914 [synonym], Ceratites (Hollandites) organi Smith 1914 [synonym], Ceratites altilis Smith 1914 [synonym], Ceratites applanatus Smith 1914 [synonym], Ceratites gilberti Smith 1914 [synonym], Ceratites karpinskyi Smith 1914 [synonym], Ceratites pilatus Smith 1914 [synonym], Ceratites rotuloides Smith 1914 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 27 | 22.3 | 10.5 | 42.0 | 24.0 | 7.99 | |
| shell diameter | 27 | 46.0 | 23.0 | 85.0 | 50.0 | 16.7 | |
| shell inflation | 27 | 12.6 | 7.70 | 22.1 | 13.0 | 3.29 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Collections (72 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Anisian | Svalbard and Jan Mayen | Ceratites geminatus (212546) Ceratites laqueatus, Ceratites nathorsti (211960) Ceratites nathorsti (212078 212557) F. sp., Hollandites organi, Gymnotoceras hersheyi (212789) Gymnotoceras geminatum (215515) Gymnotoceras laqueatum (212125) Gymnotoceras laqueatum, Gymnotoceras geminatum (215514) Hollandites organi, Gymnotoceras hersheyi (212937 212969) | |
| Anisian | Canada (British Columbia) | F. chischa (44151) F. kindli (137081) | |
| Anisian | Svalbard and Jan Mayen (Barentsøya) | F. bisulcatus, Hollandites organi, F. humboldtensis (212892) | |
| Anisian | USA (Nevada) | Ceratites humboldtensis (33207) | |
| Anisian | Russian Federation | F. chischeformis (124650) F. nevadanus (124552 124651) F. nevadanus, F. lenaensis (124639) F. nevadanus, Gymnotoceras spurri (107040) | |
| Illyrian | Svalbard and Jan Mayen | F. laqueatus (144472 144473 144480) | |
| Illyrian | Svalbard and Jan Mayen (Barentsøya, Edgeøya, and Hopen (Svalbard) ) | Gymnotoceras laqueatum (212901) | |
| Illyrian | Svalbard and Jan Mayen (Spitsbergen) | F. laqueatus (211377) | |
| Illyrian | USA (Nevada) | Ceratites applanatus, Ceratites rotuloides, Ceratites altilis, Ceratites gilberti, Ceratites occidentalis, Ceratites karpinskyi, Ceratites pilatus, Ceratites organi, Ceratites spurri, F. nevadanus, Ceratites emmonsi (142671) Ceratites humboldtensis (142616) Ceratites nevadanus, Ceratites humboldtensis, Ceratites cornutus, Ceratites emmonsi, Ceratites hersheyi (142670) Ceratites organi (33270) F. nevadanus (33322 38925 40751 143029 143216) F. occidentalis (33198 38927 38930 44154 57089 142859 142860 142870 143018 143025 143031) | |
| Illyrian | Canada (Nunavut) | F. laqueatus (43850) | |
| Illyrian | Canada (British Columbia) | F. chischa (139053 139511 139558 139564 141641) F. hamatus (137669 139560) F. kindli (216620) Gymnotoceras sp. (137076) | |
| Illyrian | Russian Federation | F. bisulcatus (124941) F. bisulcatus, F. chischa (214772) F. chischeformis (151183) F. darkiensis (111931) F. darkiensis, F. nevadanus (111974) F. nevadanus (151177 151178 151179 151180 151181 151182 151190) F. nevadanus, F. lenaensis (107189) Hollandites organi (214884) | |
| Pelsonian | Israel (Negev) | F. sp. (214648) | |
| Illyrian - Fassanian | USA (Nevada) | Ceratites nevadanus (142621) | |
| Ladinian | Russian Federation | F. nevadanus (124554) F. nevadanus, F. laqueatus (124555) |