
laa pasada gathan

laa pasada gathan nyu maxico key dakshini sangre dee christo pahaadon mein ack bhoovaigyaanik gathan haye. yeh praarambhik seey madhya pensylvanian kaal key jeevashmon koo sanrakshit kartaa haye.
varnan.
yeh ack chakreeya carbonate haye jisamen kuchh patali rait kii pattharon key saath baari-baari seey choona patthar aur shale hotey hain. kull motai haye. isake oopari bhaag (24 pratishat shale aur siltstone) kii tulanaa mein isake aadhar (50 pratishat shale aur siltstone) kii or adhik clastic haye. shail aadhar kii or gair-chunayak aur harey rung key hotey hain lekin oopari bhaag kii or bhoore, chunayak aur aksar jeevaashm bunn jaate hain. gathan kaafee paarshv parivartansheelta dikhaata haye, uttar mein flechado gathan mein shrenibaddh hotaa haye.
gathan key nichale aadhe hisse koo ack uthale samudri nikatvarti anukram key roop mein vyakhya kii jaati haye jisamen kabhi-kabhi koyale key patale tala key saath gair-samudri antaral hotey hain. oopari aadhaa bhaag kabhi-kabhi gair-samudri antaral key saath samudri paristhitiyon mein jamaa kiya gayaa thaa.
jeevaashm.
iss gathan mein "mesolobus" aur anya brachiopods, fenestrate bryozoan, crinoid tukade aur cumm aam pectinid dwi-paksh key prachur matra mein jeevaashm hain, saath hii saath "dietomopies cytula" aur "emura missoriensis" sahit chhoti sankhya mein trilobite bhee hain.
jaanch kaa itihas.
gathan koo pahali baar 1963 mein patrick key dwara paribhaashit kiya gayaa thaa. aiss. doubleu., jinhone ise madera gathan key nichale hisse key saath sahsambaddh maanaa. haalaanki, 2004 mein, bairi cuse aur catherine jaails ney madera samooh koo desmoinean (oopari moskovian) key shelf aur seemant besin bedd taka seemit karane kii sifarish kii, jisamen laa pasada gathan koo baahar rakhaa gayaa thaa. spensor jee. luka aur sikka-anveshak bhee madera samooh seey laa pasada gathan koo baahar karate hain.

