Results 31 to 40 of about 6,971 (210)
Rivista Italiana di Paleontologia e Stratigrafia, 2008 In this paper is for the first time dated the inception of the Lower Jurassic marly sedimentation and the lower Toarcian black shales in the Tuscan Nappe, based on semiquantitative analysis of the calcareous nannofossils recovered from the Calcare ...
NICOLA PERILLI +2 more
doaj +1 more source
EARLY JURASSIC TEREBRATULIDE BRACHIOPODS FROM ZEALANDIA
Rivista Italiana di Paleontologia e Stratigrafia, 2019 Terebratulides, a minor group in New Zealand and New Caledonian Triassic faunas, become second in prominence only to rhynchonellides in the Jurassic.
DONALD ALEXANDER BANKIER MACFARLAN
doaj +1 more source
Geology of the Mt. Cosce sector (Narni Ridge, Central Apennines, Italy) [PDF]
, 2016 This paper is companion to a 1:15,000 scale geological map of the southern sector of the Narni Range in Central Italy. This sector of the Apenninic Chain was affected by the western Tethyan rifting stage during the Early Jurassic, and the inherited ...
Cipriani, Angelo
core +1 more source
Journal of Palaeogeography, 2019 The stable isotope (δ13C, δ18O) composition of a collection of Lower Jurassic brachiopods and oysters from the Andean Basin of northern Chile was analyzed.
Matthias Alberti +2 more
doaj +1 more source
Extent and duration of marine anoxia during the Frasnian– Famennian (Late Devonian) mass extinction in Poland, Germany, Austria and France [PDF]
, 2004 – The intensity and extent of anoxia during the two Kellwasser anoxic events has been investigated in a range of European localities using amultidisciplinary approach (pyrite framboid assay, gamma-ray spectrometry and sediment fabric analysis).
Bond, D.P.G., Racki, G., Wignall, P.B.
core +1 more source
Environmental controls on the distribution of neoselachian sharks and rays within the British Bathonian (Middle Jurassic). [PDF]
, 2003 Extensive sampling from a range of facies within the Bathonian (Middle Jurassic) of southern England has allowed the palaeoenvironmental distribution of a number of taxa of neoselachian sharks and rays to be assessed.
Underwood, Charlie J.
core +1 more source
Quarterly Journal of the Geological Society of London, 1903 Two ammonites belonging to the family Hildoceratidæ have been found by members of the Cotteswold Naturalists' Field-Club, and have been given to me to name. Both happen to be new forms; and they are of particular interest—one for the geological information which it gives, the other from a biological point of view.
openaire +1 more source
Shark and ray teeth from the Hauterivian (Lower Cretaceous) of north-east England [PDF]
, 1999 Sampling of hiatal horizons within the Hauterivian part of the Speeton Clay Formation of north-east England has produced teeth of several species of sharks and rays, four of which are previously unnamed.
Mitchell, S.F. +2 more
core +1 more source
Sea surface temperature contributes to marine crocodylomorph evolution [PDF]
, 2014 During the Mesozoic and Cenozoic, four distinct crocodylomorph lineages colonized the marine environment. They were conspicuously absent from high latitudes, which in the Mesozoic were occupied by warm-blooded ichthyosaurs and plesiosaurs.
Amiot, Romain +3 more
core +3 more sources
The Toarcian black shale event in northern Italy
Organic Geochemistry, 1988 Abstract During the Early Toarcian (Jurassic; c . 192 Ma), organic-rich sediments were deposited in many areas of Europe. This paper reports the major findings of the first part of an organic geochemical investigation of the Toarcian Oceanic Anoxic Event (OAE).
Farrimond, P +3 more
openaire +2 more sources