54 A. n. nAB.iOBT). 



pe^paMx, lUH npepbiBaioTCfl h ycTy^aK)T^ MtcTO caMOCTOflTejibHLmT> ButmuHMi peSpanih, 

 iioflBJiflwmHMca BT, ABOHHOM'K qHCJit npoTHBX yw6oHa.iitHLiXT> pe6epT>; BHtmnia pe6pa oc.ia- 

 6jimoTCfi n HiiorAa CM'fcmaioTCfl bi 6opo3AK'fe, oxAtjiaiomeH syfiiaTbiH kiijib oti> ookoboh noBepx- 

 uocxn. YmSo Bib 3T0M7i Bospacit HerjiyooKoe n Ch OKpyr.ieeiibiMH npajiMH. 



MojioAbie 9K3eMnjiflpbi Gardioceras ct> TaKnam npaaaaKaMn CKy-Ubniypbi oSbiKHOBeuiio 

 onpeA'fejifliOTca bt. KOJJieK[i,iflxx, KaKT> G. cordatum. rioAoSHbm aKseMniapi, HicKOJibKO meiib- 

 luaro Aiawerpa, HsoSpaJKeHij Ha xaSj. Ill, ^nr. 3 r 3a coMnneiiia Jlopioja wOxfordieu inf6- 

 rieur du Jura Ledouien» noAT3 nMeHeMT> Gardioceras cordatum^ Tanate bi coiniieHinlljiOBaii- 

 cKaro ((L'Oxfordien et le sequanien des gouvernements de Moscou et de Riazau» (PI. X, 

 fig. 28), noATj HMeneMT, Gardioceras cordatum Sow. (forme typique). 



Ha BQtoiHCMT, nojiyoSopoii xoro ate 3K3eMnjiflpa (Ta6ji. XV, <i>nr. 4) yMSoeaJiLHMfl 

 pe6pa yate Hcqesjin, BufeuiHia, nsorflyxbia BnepeA^ pe6pa, oSpaayromia 3y6qaTbiH KH;ib paKO- 

 BHHbi, eme coxpaHHjncb bi aaiajife nojiyoSopoia, a ki Konuy ero ii oun ncqesjn ironrfi cosep- 

 uieHiio, a BMicrf Ch 9thmt> h 3y6qHKH khjih ciajin SHaqniejibHo aicHie pisKUMH. yjiSoHajibiiaa 

 noBepxnocTb aioro nojiyo6opoTa CA^jiajiacb ne TOJibKO OTBtciioit, no Aaate HaBncaK)iii,eH. 



Gardioceras excavatum var. arctica nov. 



Ta6.a. XV, <i.iir. 3 ii T&<y^. XVI, <i>iir. 1. 



^- Wi^'^-W^^ ^' I- M'£cT.: p. AriaSapx; kojij. 6ap. 3. B. TojiJia 1893 r. 



I860. Ammonites cordatus d'Orbigny. Pal6ontologie fraugaise, pi. 193, fig. 1, 2, 3. 



1881. AmmaWieus excavatus C. HnKirriinii. lOpcKia ofipasocauia iiejsjy PuShhckomt., Mojoroio n 



MuuiKHnuM'B. Maxep. wh reo.ioriH Poccin, t. X, cxp. 272, xaCi. II, (jinr. 13. 

 1881. AmaWieiis excavatus S. Nikitiu. Die Jura-Ablagerungen zwisclien Rybiusk, Mologa iind Myscbkin 



an der Oberen Wolga. M6m. Acad. Sc. St.-Petersbourg, VII s6rie, tome XXVIII, As 5, cxp. 52. 

 1883. Gardioceras m. f. cordatum Sow. — excavatum Sow. Teisseyre. Ein Beitrag zur Kenntniss dcr 



Cephalopodenfauna der Ornateuthone im Gouvernement Rjasan (Russland). Sitzungsb. d. K-k. Akad. 



der Wissensch. Wien. I. Abth. Juli-Heft. Jabrg. 1883. S. 3 (540), Taf. I, Fig. 1. 



Bt. cnSMpcKon KO-iJiJieKuiH nMiioTCfl Asa xopoiuo coxpaunBUiieca aKaeMnjiapa 3Toro eapic- 

 xera A"" H h ||| u OAHn-b Bspocjibiii, iitcKOJibKO BbiBixpHemiHca cb noeepxHocxH anseMnjapi 

 JVs §§. MenbEum h3t> AByxi nepBbixij .3K3eMiiJinpoB'b eiij,e coxpaaH.ii iia Sojiie mojioaomt, 

 uojyo6opox'fe p-fcsKO BbTpajKCHHyio CKy.ubnxypy, cocxoamyio nsi yMSouaJibabixx. pe6epi (10 iia 

 noiyoSopoxi), npoAOjacawmnxca neMHoro A^-itine Yg SokoboS noBepxnocxH n yxo.imaiomnxcfl 

 6JIH3X) BHiiuHaro K0Hii,a, ta^ KaacAoe h31 hhxx pacnaAaexca na ab^ b^xbh, Mcasay KoxopbiMO 

 BCxaBJiaexca eme no npoMeaiyxoiHOMy pe6py ; nojyqnBniiaca xaKHMT. o^pasoMt BH-femnia pe6pa 

 nAyTT> cnaqajia bx, paAiajibHOMi HanpaBJieniH, a aaxfewxi nsrnSaEoxca BnepeAT) 0, nepexoAa 

 lepeaxj saocxpeeabm cn^onajibHbiH Kpan paKOBUHbi, o5pa3ytoxT> na neiix 3y6'jaxbifl KHJib. Hh- 

 Koxopbia HS'b dTBx-b pe6epT> pasBtxBJiawxca na abob oko.io KH.ia. 3xa CKyjibmypa coBepraenno 

 cooxBtxcxByexT. ouncanuoH HHKHxnHbiMx y ero G. excavatum wi'h CejHXOBa, Hpocjias- 



