lOPCKia H HHatHEM^IOBHa CEPHALOPODA CSBEPHOH CHBHrH. 53 



A^JiaeTca jskhmi h ymSoeajitHafl noBepxHOcxt iiaBHcaiomeH h paKOBHwa cxaeoBnTCfl noxoffiCK) 

 Ha Gardioceras excavatum bo BspocjiOMTi ero cocToaHin. 



JIonacTHaH mma BHAHa He BHOJiHt. BH-tmeee h nepsoe 6oKOBoe cfe^jia BbicoKis h ymipeHHO 

 paacftqeenwa. 



B.iiH3KnMi K^ 3T0My Bi^jifiWh R^AnQiZfiCardiocerasmMtinianum Labus. (w^l'ayea lOpcKHxii 

 o6pa30BaHin PasaHCKoS ry6.», cip. 50, TaSji. V, <i>Hr. 7, 8, 9), ho BHAt JIaryseea OTjinqaexca 

 6ojibmeK) TOjimHHOK) paKOBDHbi, MeH-fee BbiAaiomnMCfl h Meefee o6oco6jeHHbiM^ khjigmt. h toji- 

 CTbiMH BetmHnMR peSpaMH, Sojiie tojicthmh, qtMT> yMSoHajbHbm peSpa. KpoMt Toro, cyme- 

 CTBGHHoe pasjiHqie b^ tom^, qro Gardioceras anabarense pano yTpaqHBaeTT> cKyjibniypy h 

 nepexoAnxTi bt> cxaAiw excavahmi. 



Gardioceras excavatum Sow. 



Ta6j. XV, *Hr. 4. 



JV^ p. Micx.: p. AHa5apT>, npaBbiii 6eperi, MeacAy pp. TIojiOBHHHafl h CooKa; 

 KoiJi. 6ap. 9. B. TojiJifl 1893 r. 



1818. Ammonites excavatus Sowerby. Mineral-Conch. Vol. II, p. 5 — 6, pi. CV. HtsieuK. mjk. 1842, 

 CTp. 157, Ta6j. 105. Toti kg .^KseMOjapT. BOcnponaueAeHt (})OTorpail)HiecKii M. Healey Bt Pa- 

 laeontologia universalis 1905, lafiji. 92b. 



TaK-L KaKT. opnrHHaJibHbiH pncyHOKi. Am. excavatus CoBepSn neAociaxoqno xohho 

 nepeAaBajiX) npn3HaKH 3xoro B0Aa h AaBajn. noBOAT> c^Bxaxt ero 6oji'he pasAyxbiMXi btj yM6o- 

 HajibHon oSjiacxH, nimi> axo OKasbiBaexcn xenepb npn snaKOMCxB'fe ch 4>oxorpa<i>HqecKHMi nso- 

 SpaffieHieMi, xo ecxecxBeeHO, qxo nocjifeAywuiie aBxopbi oxnocH.in k-l axoiny bhaY *opMbi, 

 CHJibHo oxjiniaiouiiscH oxi xnna CoBep6n h sacjiyatHsawniifl BbiAfejieaia bt> oco6biH sapie- 

 xext, KoxopbiH 6yAex^ onncaHi bcji^atj sa 3xnMT>. 



no CoBopSH, G. excavatum, xapaKxepnsyexca cji'feAytom.HMH rjiasHbiMR npHsnaKaMH: 

 nnBO.iiK)XHaa JinnsooCpaaeaa paKOBBHa, ct AOBOJibHO ocxpbiMT, eySqaxbiMi KHJiewx,, co cjiaGo 

 BbipajKCHUbiMH BnaABHaMH no 6oKaMX> ero, ch yMtpeuHO niBpoKHM'b yM6o (((Subiimhilicafe^^), 

 OTKpbixbiMX H BM'fewmBMT, OKpypjibie Kpaa y mojioaoh paKOBBHbi H rjySoKBM'b, noqxn npawo- 

 yrojibHOoSpbiBaEomHiMca — y BspocjiOH; pe6pa HaKJiOHenbi BnepeA^, y mojioahxi CBjbHO Bbipa- 

 HGHbi, oco5eHno oa Buyxpeaueji'L Kpaw, y Bspocibixx. saMtaeHbi HenpaBBJibHtiMB cxpyfinaMB. 

 Ycxbe cxp'fe.ib'iaxoe ct> opnxynjieHHbiMn yr.iaMB, mnpnna oSopoxa (y CoBepSH a-Jbhr ycxba) 

 noqxH paBoa nojiOBHH'fe Aiaiviexpa paKOBHHbi. 



CpeAB CHSnpCKHX^ ^K3eM^JI^pOB^ XOJIbKO OABHl, H npBXOM^ UenOJIHblH, MOaReXl'SblTt 



GxojKAecxBJien^ ct> XHnoMx> CoBepSn. Ero mojioaoh no.)iyo6opoxi (okojio 41 mm. AJaMexpoMi) 

 DOKpbix^ Bi yMSooajibHOH CBoen lacxa qacxbiMH n pisKHMH peSpaMB, OTCxoaoiHMn oaho oxi> 

 Apyroro, npnuipHO, na 2 MBJiJinMexpa; hg AoxoAa ao cepeARHbi Sokoboh HOBepxnocxH, 3X0 

 pe6pa HJiH, pasAsaHBaacb, AawiX) Haqajio AByMi BHiiuHBMi, CBJibHO H3orHyxbiMi BnepcAt 



