Late Cretaceous nautilids from northern Cantabria, Spain

• Autorzy: Wilmsen M.
• Języki publikacji: EN

Abstrakty

EN

Nautilids do not occur throughout the Upper Cretaceous succesion in northern Cantabria. Alrhough relatively rare, they preferentially occur in condensed transgressive horizons. Nine species belonging to the genera Angulithes MONTFORT 1808, Eutrephoceras HYATT 1894, and Pseudocenoceras SPATH 1927 are recorded. A. westphalicus (SCHLUTER 1872) and E. cf. justum (BLANFORD 1861) are reported for the first time from the Iberian Peninsula. The diagnosis of A. vascogoticus WIEDEMANN 1960 is emended. The Cenomanian was characterized by a relative abundance of nautilids of the genus Angulithes which display a major radiative event, evolving relatively short-lived species. This development was probably related to the "Cenomanian transgression". Compared to co-occuring ammonite faunas, Angulithes inhabited deeper and more distal environments. A possible transitional form, connecting the two genera Angulithes and Deltocymatoceras KUMMEL 1956 (?Turonian, Coniacian - Santonian), is recorded from the Mid-/Late Cenomanian. The Turonian to Campanian succession is dominated by long-ranging nautilids of the genus Eutrephoceras.

Słowa kluczowe

EN

Late Cretaceous; nautilids; Spain; taxonomy

• Wydawca: Faculty of Geology of the University of Warsaw ; Komitet Nauk Geologicznych PAN
• Czasopismo: Acta Geologica Polonica
• Rocznik: 2000
• Tom: Vol. 50, no. 1
• Strony: 29--43
• Opis fizyczny: Bibliogr. 54 poz., tab. rys.

Twórcy

autor

Wilmsen M.

• Institut fur Palaontologie der Bayerischen Julius-Maximilians-Universitat, Pleicherwall 1, D-97070 Wurzburg, Germany