一种罕见的化石记录(a rare fossil record)

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1、一种罕见的化石记录(ARareFossilRecord)　　thepreservatinfebrsanduvenilesisarateurreneinthefssilrerdthetin,deliateseletnsareusuallsatteredbsavengersrdestredbeatheringbefretheanbefssilizedihthsaurshadahigherhanefbeingpreservedthandidterrestrialreaturesbeause,asarineanials,thetendedtliveinenvirnentsless

2、subettersin　　still,theirfssilizatinrequiredasuiteffatrs:aslratefdeafsfttissues,littlesavengingbtheranials,alafsifturrentsandavestubleandarraasallbnes,andfairlrapidburialgiventhesefatrs,seareashavebeeatreasurfell-preservedihthsaurfssils　　thedepsitsathlzaden,geran,presentaninterestingasefra

3、nalsistheihthsaurreainsarefundinbla,bituinusarineshalesdepsitedabut190illinearsagvertheears,thusandsfspeiensfarinereptiles,fishandinvertebrateshavebeenreveredfrthesers　　thequalitfpreservatinisutstanding,buthatisevenreipressiveisthenuberfihthsaurfssilsntainingpreservedebrsihthsaursithebrsh

4、avebeenreprtedfr6differentlevelsftheshaleinasallareaarundhlzaden,suggestingthataspeifisiteasusedblargenubersfihthsaursrepeatedlvertie　　theebrsarequiteadvanedintheirphsialdevelpent;theirpaddles,frexaple,arealreadellfrednespeienisevenpreservedinthebirthanalinadditin,theshalentainsthereainsf

5、annebrnsthatarebeteen20and30inheslng　　haretheresanpregnantfealesandungathlzadenhenthearesrareelsehere?thequalitfpreservatinisalstunathedandquarrperatinshavebeenarriedutarefullithanaarenessfthevaluefthefssilsbutthesefatrsdntauntfrtheinterestingquestinfhthereaetbesuhanentratinfpregnantihths

6、aursinapartiularplaeverlsettheirtiefgivingbirth