This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.
1840. Catalogus systematicus Ectyporum Echinodermatum fossilium Musei Neocomiensis, secundum ordinem zoologicum dispositus; adjectis synonymis recentioribus, nec non stratis et locis in quibus reperiuntur. Sequuntur characteres diagnostici generum novorum vel minus cognitorum. Neuchâtel: Oliv. Petitpierre, 20 pp.
W. Alvarez 2009. The historical record in the Scaglia limestone and Gubbio: magnetic reversals and the Cretaceous–Tertiary mass extinction. Sedimentology 56, 137–48.
A. L. Cardenas & P. J. Harries 2010. Effect of nutrient availability on marine origination rates throughout the Phanerozoic eon. Nature Geoscience 3, 430–4.
P. G. Falkowski , M. E. Katz , A. H. Knoll , A. Quigg , J. A. Raven , O. Schofield & F. J. R. Taylor 2004. The evolution of modern eukaryotic phytoplankton. Science 305, 354–60.
J. D. Gage 1987. Growth of the deep-sea irregular sea urchins Echinosigra phiale and Hemiaster expergitus in the Rockall Trough (N. E. Atlantic Ocean). Marine Biology 96, 19–30.
C. Gaillard , D. Neraudeau & J. Thierry 2011. Tithonia oxfordiana, a new Jurassic irregular echinoid associated with Jurassic seep deposits in south-east France. Palaeontology 54, 735–52.
S. Galeotti , M. Bellagamba , M. A. Kaminski & A. Montanari 2002. Deep-sea benthic foraminiferal recolonisation following a volcanoclastic event in the lower Campanian of the Scaglia Rossa Formation (Umbria-Marche Basin, central Italy). Marine Micropaleontology 44, 57–76.
A. Kroh & A. B. Smith 2010. The phylogeny and classification of post-Palaeozoic echinoids. Journal of Systematic Palaeontology 8, 147–212.
R. M. Leckie , T. J. Bralower & R. Cashman 2002. Oceanic anoxic events and plankton evolution: biotic response to tectonic forcing during the mid-Cretaceous. Paleoceanography 17, 1041, doi: 10.1029/2001PA000623, 29 pp.
W. Lowrie & W. Alvarez 1977. Upper Cretaceous-Paleocene magnetic stratigraphy at Gubbio, Italy. III. Upper Cretaceous magnetic stratigraphy. Geological Society of America Bulletin 88, 364–77.
R. E. Martin 1996. Secular increase in nutrient levels through the Phanerozoic: implications for productivity, biomass, and diversity of the marine biosphere. Palaios 11, 209–19.
R. E. Martin 2003. The fossil record of biodiversity: nutrients, productivity, habitat area and differential preservation. Lethaia 36, 179–94.
R. E. Martin , A. Quigg & V. Podkovyrov 2008. Marine biodiversification in response to evolving phytoplankton stoichiometry. Palaeogeography, Palaeoclimatology, Palaeoecology 258, 277–291.
S. Monechi & H. R. Thierstein 1985. Late Cretaceous-Eocene nannofossil and magnetostratigraphic correlation near Gubbio, Italy. Marine Micropalaeontology 9, 419–40.
M. A. Rex , C. R. McClain , N. A. Johnson , R. J. Eter , J. A. Allen , P. Bouchet & A. Waren 2005. A source-sink hypothesis for abyssal biodiversity. The American Naturalist 165, 163–78.
A. B. Smith 2004. Phylogeny and systematics of holasteroid echinoids and their migration into the deep-sea. Palaeontology 47, 123–50.
A. B. Smith & J. A. Crame 2012. Echinoderm faunas from the Lower Cretaceous (Aptian–Albian) of Alexander Island, Antarctica. Palaeontology 55, 305–24.
A. B. Smith & A. S. Gale 2009. The pre-Messinian deep-sea Neogene echinoid fauna of the Mediterranean: surface productivity controls and biogeographical relationships. Palaeogeography, Palaeoclimatology, Palaeoecology 281, 115–25.
A. B. Smith & C. H. Jeffery 1998. Selectivity of extinction among sea urchins at the end of the Cretaceous period. Nature 392, 69–71.
A. B. Smith & B. Stockley 2005. The geological history of deep sea colonization by echinoids: roles of surface water productivity and deep-water ventilation. Proceedings of the Royal Society B 272, 865–9.