The early evolution and palaeobiogeography of Mesozoic planktonic foraminifera

Hart, Malcolm B.; Oxford, Melissa J.; Hudson, W.

doi:10.1144/gsl.sp.2002.194.01.09

Cited by 20 publications

(12 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is essential to note that studies of the global diversity of Cretaceous planktonic foraminifers (e.g. Hart 1999;Premoli Silva & Sliter 1999;Hart et al 2002) have shown that anoxic events cannot be described as 'controlling factor' of the evolution of planktonic foraminifers. These studies emphasize that OAE2 is not associated with a drop in foraminifer diversity, but with a major turnover and a slight increase in taxonomic richness.…”

Section: Discussionmentioning

confidence: 99%

European ammonoid diversity questions the spreading of anoxia as primary cause for the Cenomanian/Turonian (Late Cretaceous) mass extinction

Monnet¹,

Bucher²

2007

Swiss j geosci

View full text Add to dashboard Cite

Ammonoid diversity patterns show that the spreading of oceanic anoxia is not the initial and major kill mechanism for the Cenomanian/Turonian mass extinction as usually suggested. In the Anglo-Paris Basin and the Vocontian Basin, the drop of ammonoid species richness starts around the middle/late Cenomanian boundary, i.e. 0.75 myr before the occurrence of anoxic deepwater sediments. The stepwise extinction of first heteromorphs and then acanthoceratids is incompatible with the rise of the oxygen minimum zone. Moreover, shelf environments of these basins remained well oxygenated during the Cenomanian/Turonian boundary interval. Thus, we stress that other causative mechanisms initiated the ammonoid extinction even if anoxia subsequently participated in the demise of marine ecosystems. RESUME L'extinction de masse de la limite Cénomanien/Turonien (Crétacé supérieur) est habituellement considérée comme un exemple typique d'extinction globale causée par la remontée d'eaux anoxiques. Cependant, l'analyse des changements de biodiversité des ammonoïdés durant l'intervalle Cénomanien-Turonien inférieur démontre que cet événement océanique anoxique (OAE2) n'est pas la cause initiale et majeure de l'extinction des ammonites. Les bassins européens (Bassin anglo-parisien et Bassin vocontien) montrent que la chute de diversité (en terme de richesse spécifique) des ammonites s'amorce autour de la limite Cénomanien moyen/supérieur. Le déclin des ammonites se produit donc 0,75 million d'années avant le développement des eaux anoxiques. A ce décalage temporel entre les ammonites et l'anoxie s'ajoute une incompatibilité entre l'expansion d'eaux anoxiques vers les plateformes et le déclin prématuré des hétéromophes (plutôt pélagiques) par rapport aux acanthoceratidés (plutôt necto-benthiques). De plus, l'enregistrement stratigraphique des domaines peu profonds de ces bassins montre clairement que les eaux sont toujours largement oxygénées pendant la limite Cénomanien/Turonien. Il est donc probable que des mécanismes autres que l'anoxie doivent avoir initié l'extinction de masse de la limite Cénomanien/Turonien (au moins en ce qui concerne les ammonites), même si l'anoxie a ensuite partiellement participé au bouleversement des écosystèmes marins à cette période.

show abstract

Section: Discussionmentioning

confidence: 99%

European ammonoid diversity questions the spreading of anoxia as primary cause for the Cenomanian/Turonian (Late Cretaceous) mass extinction

Monnet¹,

Bucher²

2007

Swiss j geosci

View full text Add to dashboard Cite

show abstract

“…tropical/subtropical) facies in the Early Jurassic (Toarcian) (Hart et al 2002). A biostratigraphic analysis has indicated some expansion within the North Atlantic-European region in both the Bajoican-Bathonian and Aptian, but it was not until the latest Albian that a near-global distribution was achieved.…”

Section: Some Geographical Constraints On the Radiationmentioning

confidence: 99%

Palaeobiogeography and the Ordovician and Mesozoic-Cenozoic biotic radiations

Owen

Crame

2002

View full text Add to dashboard Cite

Curves of taxonomic diversity through geological time consistently show major evolutionary radiations during the Ordovician Period and from the mid-Mesozoic to the present day. Both intervals were characterized by marked biotic provincialism, reflecting episodes of major continental break-up and global tectonism, and their later histories featured steep global climatic gradients. The Ordovician radiation can be recognized at a wide spectrum of taxonomic levels from species to class, and the biogeographical patterns associated with the radiation of individual clades reflect a complex combination of plate distribution, tectonic activity, sedimentary environment, sea-level rise and, ultimately, glaciation. The true scale of the mid-Mesozoic-Cenozoic biotic radiation is currently a topic of intense debate but there is no doubt that it affected plants and animals in both the marine and terrestrial realms. The role of land bridges and ocean gateways in controlling the formation of biodiversity patterns has been a persistent theme in Mesozoic-Cenozoic biogeography, and a complex set of Neogene tectonic events probably aided the development of both latitudinal and longitudinal provinces during the Cenozoic. The present volume highlights some of the successes across a spectrum of approaches to unravelling the Ordovician and Mesozoic-Cenozoic radiations within the context of palaeobiogeography.'... geologic history is the pacemaker of biologic diversity' (Schopf 1979, p.454) Post-Cambrian curves of taxonomic diversity through geological time consistently show a major evolutionary radiation during the Ordovician Period, and a second, larger one from the mid-Mesozoic to the present day. Between these steep upward slopes the Silurian-Jurassic interval usually appears as a distinct plateau punctuated by mass extinctions and their recovery

show abstract

“…This is almost the same time that the planktic foraminifers appeared in the Tethys Ocean (Wernli, 1995;Wernli and Görög, 1999;Hart et al, 2003Hart et al, , 2012aHudson et al, 2009). The planktic foraminifers did not, however, become diverse and abundant until the Early Cretaceous (Premoli Silva and Sliter, 1999;Hart, 1999;Hart et al, 2002). All of the Jurassic planktic foraminifers appear to have been relatively simple 'globigerine' forms with aragonitic tests (Hart et al, 2012a).…”

Section: Accepted Manuscriptmentioning

confidence: 91%

Global bioevents and the Cretaceous/Paleogene boundary in Texas and Alabama: Stratigraphy, correlation and ocean acidification

Hart

Leighton

Hampton³

et al. 2019

Global and Planetary Change

Self Cite

View full text Add to dashboard Cite

With increasing levels of atmospheric pCO 2 the oceans are becoming progressively more acidic, with the impact of a lowered pH beginning to affect the calcification of numerous invertebrate groups, including foraminifers, pteropods, heteropods and calcareous nannoplankton. Research on the ecology of foraminifera in the Mediterranean Sea, Gulf of California, Caribbean Sea and elsewhere has shown how modern assemblages are responding to acidification. Experimental work in mesocosms and laboratory cultures are also adding to our knowledge of the response to pH changes. Near Ischia (Italy), natural CO 2 vents amongst sea grass meadows are creating low pH environments in which it is possible to observe the response of benthic foraminifera. At a pH of 7.8 the foraminiferal assemblages are already becoming less diverse and below pH 7.6 there are often no calcite-secreting benthic foraminifera. In the Gulf of California, in a deeper-water setting, natural CO 2 (and methane) vents are also lowering sea floor pH. The foraminifera show the impact of this change, although the relatively high carbonate saturation ensures that calcite-secreting foraminifers are able to live and reproduce in these relatively low pH environments, only becoming impacted by dissolution effects once dead. Using data from the Cretaceous-Paleogene boundary in Texas, Alabama and northwest Europe it is clear that the plankton was severely impacted by surface water acidification

show abstract

The early evolution and palaeobiogeography of Mesozoic planktonic foraminifera

Cited by 20 publications

References 17 publications

European ammonoid diversity questions the spreading of anoxia as primary cause for the Cenomanian/Turonian (Late Cretaceous) mass extinction

European ammonoid diversity questions the spreading of anoxia as primary cause for the Cenomanian/Turonian (Late Cretaceous) mass extinction

Palaeobiogeography and the Ordovician and Mesozoic-Cenozoic biotic radiations

Global bioevents and the Cretaceous/Paleogene boundary in Texas and Alabama: Stratigraphy, correlation and ocean acidification

Contact Info

Product

Resources

About