priabonian
31Paleozoic — era 542   251 million years ago Key events in the Paleozoic view • edit …
32Precambrian — For the album by German band The Ocean, see Precambrian (album). Precambrian Period 4567.17–542 million years ago …
33Passerine — Taxobox name = Passerines fossil range = Early Eocene (Wangerripian) to Recent image width = 250px image caption = House Sparrow ( Passer domesticus ) regnum = Animalia phylum = Chordata classis = Aves subclassis = Neornithes infraclassis =… …
34Younger Dryas — Three temperature records, the GRIP sequence (red) showing the Younger Dryas event at around 11.0 ka BP. The vertical axis shows δ18O, which is a temperature proxy showing the water molecule isotopic composition of 18O in an ice core …
35Loon — For other uses, see Loon (disambiguation). Divers / Loons Temporal range: ?Late Eocene Recent (see text) 37–0 Ma …
36Mesoproterozoic — era 1600   1000 million years ago Key events in the Mesoproterozoic view • edit …
37Sciuridae — Taxobox name = Sciurids fossil range = Late Eocene Recent image width = 240px image caption = Eastern Gray Squirrel, Sciurus carolinensis a Sciurini tree squirrel regnum = Animalia phylum = Chordata classis = Mammalia infraclassis = Eutheria… …
38Cryogenian — Period 850–630 million years ago …
39Popigai crater — The Popigai crater in Siberia, Russia is tied with Manicouagan Reservoir as the 4th largest impact crater on Earth.Cite book publisher = Springer pages = 81 85 last = Masaitis first = Victor L. title = Popigai Crater: General Geology date = 2003… …
40Chronospecies — A chronospecies describes a group of one or more species derived from a sequential development pattern which involves continual and uniform changes from an extinct ancestral form on an evolutionary scale. This sequence of alterations eventually… …
