Early Tournaisian ammonoids from Timimoun (Gourara, Algeria)
نویسندگان
چکیده
منابع مشابه
Evidence from ammonoids and conodonts for multiple Early Triassic mass extinctions.
Ammonoids and conodonts, being characterized by exceptionally high background rates of origination and extinction, were vulnerable to global environmental crises, which characteristically intensified background rates of extinction. Thus, it is not surprising that these taxa suffered conspicuous mass extinctions at the times of three negative Early Triassic global carbon isotopic excursions that...
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ژورنال
عنوان ژورنال: Fossil Record
سال: 2004
ISSN: 2193-0074
DOI: 10.5194/fr-7-133-2004