
valesian

valesian yug myocene key bheetar bhoovaigyaanik samay (11.6-9.0 Ma) kii avadhi haye jiska upayog vishesh roop seey europeeya bhoomi standhari ayu key saath kiya jaataa haye. yeh turolean yug seey pahale hotaa haye aur taarakiya yug kaa anusaran kartaa haye. tathaakathit valesian sankat key parinamswarup madhya myocene kii visheshta vaale kaee stanpaayi vargeekaran vilupt hoe gaye.
valesian" shabd koo europe mein equid "hipperian" key aagaman koo chihnit karane key liye 1950 mein catalan paleontologist mikel crusafont dwara pesh kiya gayaa thaa. halanki, shesh europeeya paleophauna madhya myocene key baad seey they, jinamen moskid "micromerics" (ack kasturi hiran), garbhashay grieva "euprox", suid "listriodon" aur felids "sansanosmillus" aur "sudelurus" shamil hain, aur aragonian-valesian seema europeeya stanpaayi record mein ack pramukh badalaav kaa pratinidhitva naheen karati haye. isake vipareet, nichale aur oopari valesian key beach sankraman ack pramukh javic sankat seey mell khaata haye-adhikansh aragonian arteodactils kaa nidhan, jisamen antilope "protragocerus", bovid "meotragoserus", "listriodon" aur suids "hypotherium" aur "paracleosastocarus" shamil hain. sankat ney krintakon jaise parivaar eomidae aur adhikansh crickted aur glyrid koo bhee prabhaavit kiya. unhein poorv seey aaney vaali prajaatiyon dwara pratisthaapit kiya gayaa thaa, charitra mein turoleanah udaaharan key liye suid "schizocoerus", murid "progonomy", bovid "tragoportex" aur "gracorics", hynid "adcrocuta", felid "paramacherodus", aur suid "microstonics".
europeeya sthaliya jeevon key vikas key liye valesian ack mahatvapurna avadhi thee. madhya myocene key dauran, europeeya vanon key atyadhik vividh standhari jeevon koo myocene key anta mein jeevon dwara pratisthaapit kiya gayaa thaa, joe ack shushk jalavaayu aur ack khule ilaake key liye anukoolit they. iss avadhi kii shuruat poore eurasia mein shuruati ghode "hipperian" key roop aur failaav seey chihnit hoti haye. tathaakathit valesian sankat key parinamswarup madhya myocene kii visheshta vaale kaee stanpaayi vargeekaran vilupt hoe gaye. valesian key anta aur turolian kii shuruat ney tathaakathit upa-parathian yaa greek-iranian praant kii visheshta bovid aur jirafid key prabhutva vaale jeevon key paschim mein vilupt honey kaa kaaran banaa.