Upper Jurassic ammonites from Mexico

Imlay, Ralph Willard

doi:10.1130/gsab-50-1

Cited by 49 publications

(70 citation statements)

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“…Durangites astillerensis Imlay, 1939, and the species D. juanensis, D. latiumbilicatum and D. galeanense described by Cantú-Chapa (1968) should be excluded from Durangites because they do not show the succession of ontogenetic stages which we describe above and which will be further discussed in the description of Parrasiella gen. nov. section of this paper. D. vulgaris and D. cf.…”

Section: Fig 3 Durangites Vulgarismentioning

confidence: 96%

“…Genus Parrasiella gen. nov. Imlay, 1939. Derivation of name: From Sierra de Parras, a northcentral region of Mexico.…”

Section: Fig 3 Durangites Vulgarismentioning

confidence: 99%

“…Specific content: Beside the type species, Parrasiella gen. nov. comprises Durangites rarifurcatus Imlay, 1939;Durangites galeanense Cantú-Chapa, 1968;Durangites latiumbilicatum Cantú-Chapa, 1968 andDurangites juanensis Cantú-Chapa, 1968.…”

Section: Type Species: Durangites Astillerensismentioning

confidence: 99%

“…Remarks: The type species of Parrasiella gen. nov. has previously been included in the genus Durangites following the work of Imlay (1939Imlay ( , 1942 and Cantú-Chapa (1968). As herein understood, the genus Parrasiella differs by its evolute coiling, shallow umbilicus, rounded whorl section throughout ontogeny and the regular disposition of ventrolateral tubercles on the phragmocone.…”

Section: Type Species: Durangites Astillerensismentioning

confidence: 99%

“…In our view, none of the specimens illustrated are actually of the Mexican species: these will be discussed in the Boughdiriella gen. nov. section of this paper. Occurrence: According to Imlay (1939, p. 5), Parrasiella astillerensis co-occurs with Salinites grossicostatum (Imlay, 1939), Salinites ecarinatum (Imlay, 1939), and misidentified Durangites cf. acanthicus.…”

Section: Type Species: Durangites Astillerensismentioning

confidence: 99%

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Upper Tithonian Himalayitidae Spath, 1925 (Perisphinctoidea, Ammonitina) from Le Chouet (Drôme, France): implications for the systematics

Frau¹,

Bulot²,

Wimbledon³

2015

Geologica Carpathica

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This contribution focuses on the late Tithonian ammonite faunas belonging to the Family Himalayitidae Spath in the key-section of Le Chouet (Drôme, France). The great majority of specimens from the Mediterranean Tethys, previously referred to Durangites Burckhardt, are now interpreted as juveniles and/or microconchs of the highly variable species Protacanthodiscus andreaei (Kilian). Moreover, comparison between specimens from France, Spain and Bulgaria formerly assigned to Durangites astillerensis Imlay and the type material of this species, supports the introduction of Boughdiriella chouetensis gen. nov. et sp. nov. Further, the revision of the type specimens of D. astillerensis and Durangites of the D. vulgaris group shows that the former species deserves a new generic status, for which Parrasiella gen. nov. is erected. Toucasiella, previously only known from Spain and Tunisia, is also reported for the first time from south east France. The revision of the "Mediterranean Durangites" supports the rejection of a Durangites spp. Zone as part of the standard zonation for the upper Tithonian, and its replacement by the P. andreaei Zone ( = D. vulgaris Zone sensu Sarti, 1988).

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Section: Fig 3 Durangites Vulgarismentioning

confidence: 96%

“…Genus Parrasiella gen. nov. Imlay, 1939. Derivation of name: From Sierra de Parras, a northcentral region of Mexico.…”

Section: Fig 3 Durangites Vulgarismentioning

confidence: 99%

Section: Type Species: Durangites Astillerensismentioning

confidence: 99%

Section: Type Species: Durangites Astillerensismentioning

confidence: 99%

Section: Type Species: Durangites Astillerensismentioning

confidence: 99%