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TitleMagnigondolella, a new conodont genus from the Triassic of North America
AuthorGolding, M L; Orchard, M J
SourceJournal of Paleontology vol. 92, issue 2, 2018 p. 207-220, https://doi.org/10.1017/jpa.2017.123
Year2018
Alt SeriesNatural Resources Canada, Contribution Series 20170070
PublisherThe Paleontological Society
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf; html
ProvinceBritish Columbia
NTS93I; 93J; 93K; 93N; 93O; 93P; 94A; 94B; 94C; 94F; 94G; 94H; 94I; 94J; 94K; 94N; 94O; 94P
AreaLiard River; Toad River; Dawson Creek; Nevada; Clan Alpine Mountains; Augusta Mountains; Humboldt Range; Canada; United States
Lat/Long WENS-126.0000 -120.0000 60.0000 54.0000
Lat/Long WENS-119.0000 -117.0000 41.5000 39.5000
Subjectspaleontology; stratigraphy; Middle Triassic; systematic paleontology; holotypes; microfossils; conodonts; taxonomy; nomenclature; fossil descriptions; fossil morphology; fossil distribution; biostratigraphy; Magnigondolella; Toad Formation; Prida Formation; Favret Formation; Fossil Hill Member; Phanerozoic; Mesozoic; Triassic
Illustrationsbiostratigraphic charts; location maps; tables; photomicrographs
ProgramWestern Cordillera, Cache Creek Terrane, GEM2: Geo-mapping for Energy and Minerals
Released2018 03 01
AbstractThe new conodont genus Magnigondolella is recognized based on specimens recovered from the Anisian (Middle Triassic) of British Columbia in Canada, and Nevada in the USA. This new genus encompasses problematic specimens with high carinas, which have recently been collectively referred to as Neogondolella ex gr. regalis Mosher. Ten species from North America are herein assigned to Magnigondolella n. gen., including the eight new species M. alexanderi, M. cyri, M. julii, M. nebuchadnezzari, M. salomae, M. n. sp. A, M. n. sp. B, and M. n. sp. C, as well as the two existing species M. regalis (Mosher) and M. dilacerata (Golding and Orchard). Other species from the Tethys region are also tentatively assigned to Magnigondolella n. gen. Based on published records, the genus appears to range from the Spathian to the upper Anisian in North America. The recognition of eight new species from the Anisian significantly increases the conodont biodiversity of this period, which has previously been regarded as a time of low diversity. Although some of the species included within Magnigondolella n. sp. have relatively long stratigraphic ranges, many have been identified in both British Columbia and Nevada, and therefore show potential for biostratigraphic correlation on a regional scale.
Summary(Plain Language Summary, not published)
This paper introduces a new genus and several new species of conodonts to encompass forms from the Middle Triassic whose classification has previously been problematic. The new classification will make the conodonts more useful for correlating between sections during this time period. Because the new species can be recognized in samples from Canada and the USA, it shows that they are of regional utility. Furthermore, the recognition of new species demonstrates that the conodont biodiversity of the Middle Triassic is greater than has been previously assumed.
GEOSCAN ID300852