Glaciatio Ordovicia media
Glaciatio Ordovicia media, Anglice mid Ordovician glaciation vel icehouse, est frigus globale quod media periodo Ordovicia accidisse constat, circa annorum 467 milies milium ante praesentem, post magnam pluviam meteoritarum L chondritae, insequente diversificatione specierum.

Notae

Bibliographia 
 M. P. Dabard et al., "Sea-level curve for the Middle to early Late Ordovician in the Armorican Massif (western France): Icehouse third-order glacio-eustatic cycles" in Palaeogeography, Palaeoclimatology, Palaeoecology vol. 436 (2015) pp. 96-111
 Christian M. Ø. Rasmussen et al., "Onset of main Phanerozoic marine radiation sparked by emerging Mid Ordovician icehouse" in Scientific Reports vol. 6 no. 18884 (Ianuario 2016)
 Birger Schmitz et al., "An extraterrestrial trigger for the mid-Ordovician ice age: Dust from the breakup of the L-chondrite parent body" in Science Advances vol. 5, no. 9, eaax4184 (18 Septembris 2019)
 Julie A. Trotter et al., "Did Cooling Oceans Trigger Ordovician Biodiversification? Evidence from Conodont Thermometry" in Science vol. 321 (2008) pp. 550-554

Ordovicium
Aeva glacialia