﻿304 
  

  

  Scientific 
  Intelligence. 
  

  

  The 
  present 
  paper 
  is 
  a 
  preliminary 
  statement 
  of 
  his 
  conclusions 
  

   concerning 
  the 
  stratigraphy, 
  correlation, 
  and 
  general 
  faunal 
  

   relations 
  of 
  the 
  Lower 
  Cretaceous 
  of 
  Argentina, 
  issued 
  in 
  advance 
  

   of 
  the 
  complete 
  monograph, 
  which 
  may 
  be 
  delayed 
  in 
  publication. 
  

   It 
  should 
  be 
  noted 
  in 
  passing 
  that 
  Windhausen 
  uses 
  the 
  term 
  

  

  

  Stratigraphic 
  Summary 
  01 
  the 
  Neocumian 
  

  

  in 
  

  

  the 
  Argentine 
  Cordillera 
  

  

  

  Northern 
  region(neritic 
  facies) 
  

  

  Southern 
  region(bath.val 
  facies) 
  

  

  

  Variegated 
  sandstones 
  

  

  Variegated 
  sandstones 
  

  

  ■ 
  H 
  

  

  a. 
  

  

  Strata 
  with 
  Ancyloceras 
  patagonianus 
  

   Stoll.,Silesites 
  desmoceratoides 
  Stoll., 
  

   Neohibolites 
  cf 
  .senicanaliculaius 
  Eleinv. 
  

  

  ■H 
  

  

  a 
  

  

  <D 
  

   u 
  

   u 
  

  

  CO 
  

  

  Gypsum 
  deposits, 
  in 
  part 
  replaced 
  by 
  

  

  ferruginous 
  sandstones 
  

   Colomitic 
  beds 
  and 
  layers 
  

   Calcareous 
  beds 
  

   Zone 
  of 
  Holcodiscus 
  gastaldianus(d 
  'Orb. 
  ) 
  

  

  1 
  CO 
  

  

  on 
  

  

  <h3 
  

  

  t->CO 
  

   CCFH 
  

   CO 
  

  

  OOCO 
  

  

  •a 
  a 
  

  

  CO 
  

  

  aj-ao 
  

  

  ■M 
  

  

  <au 
  

  

  <U6H 
  

  

  > 
  

  

  COlH 
  

  

  >a> 
  

  

  • 
  i-ua 
  

  

  3 
  

   '•HO 
  

  

  OC/3 
  

  

  CO 
  

  

  a> 
  

  

  • 
  H 
  

   COCO 
  

  

  \* 
  

   > 
  > 
  

  

  Sla 
  

   i 
  

  

  Sti 
  

  

  CO 
  

   ID 
  

  

  CO 
  

  

  > 
  

  

  -Q 
  CO 
  

   ■Ti 
  

  

  xxo 
  

  

  VO- 
  

  

  coal 
  

   t3 
  CO 
  

   COQI. 
  

   Q 
  

  

  T3 
  

   OD 
  

  

  aco 
  

  

  a) 
  

  

  s* 
  

  

  0) 
  

  

  / 
  

  

  tes 
  with 
  Ancyloceras 
  cf. 
  simplex 
  d'Orb. 
  

   n 
  Brunswick 
  Peninsula 
  ? 
  

   ata 
  with 
  Crioceras 
  deeckei 
  Favre 
  and 
  

   C. 
  sarasini 
  Favre 
  

  

  a 
  

  

  CO 
  

   •H 
  

  

  > 
  

  

  3 
  

  

  Zone 
  of 
  the 
  aff 
  .Spitidiscus, 
  S" 
  Bar- 
  

   Cesmoceras,and 
  Lytoceras 
  Vren 
  lit- 
  

  

  Zone 
  of 
  Kilianella 
  pseudo^/toral 
  or 
  con- 
  

   regalis(Burckh.) 
  and/tinental 
  deposits 
  

   Acantbodiscus 
  radp/S.of 
  Lat. 
  38°(Filma- 
  

   iatus(Erug.) 
  >/tue',Covunco,and 
  Cerro 
  

   ,/ 
  Lotena 
  

  

  ? 
  

   Belgrano 
  beds 
  with 
  Hatchericeras 
  

  

  c 
  

  

  CO 
  

  

  a 
  

  

  •H 
  

  

  a 
  

  

  rH 
  

  

  Zone 
  of 
  Astieria 
  

  

  Zone 
  of 
  Thurmannia 
  cf 
  .boissieri(Pictet) 
  

   Zone 
  of 
  Steueroceras 
  transgrediens(Steuei 
  

   Zone 
  of 
  fceocoroites 
  and 
  Acanthodiscus 
  

   Zone 
  of 
  Spiticeras 
  dansesi(Steuer) 
  

  

  ? 
  

   ? 
  Strata 
  with 
  ammonites 
  of 
  the 
  group 
  

   of 
  Steueroceras 
  wilckensi(Favre) 
  

  

  Strata 
  with 
  Steueroceras 
  (Leopoldia) 
  

   belgranensis 
  (Favre) 
  

  

  a 
  

   a) 
  

  

  •H 
  

  

  co 
  

   as 
  

  

  •H 
  

   h 
  

  

  V 
  

   CO 
  

  

  Zone 
  of 
  Beriasella 
  f 
  raudans(Steuer) 
  

   Zone 
  of 
  Steueroceras 
  koeneni(Steuer) 
  

   Zone 
  of 
  Beriasella 
  calistoides(Bebr. 
  ) 
  

   Zone 
  of 
  Beriasella 
  koellikeri(Opp. 
  ) 
  

   and 
  B. 
  mendozana(Behr. 
  ) 
  

  

  Strata 
  with 
  Beriasella 
  (Leopoldia) 
  

  

  paynensis 
  (&avre) 
  

   Strata 
  with 
  Beriasella 
  patagoniensis 
  

  

  Favre 
  

  

  (Transition 
  beds) 
  

  

  a 
  

   ca 
  

  

  <u 
  a 
  

   a. 
  o 
  

   ft 
  ja 
  

   o 
  +> 
  

  

  Zone 
  of 
  Aspidoceras 
  steinmanni 
  Haupt 
  

   and 
  Aulacosphinctes 
  colubrinoides 
  Burckh. 
  

  

  Strata 
  with 
  Streblites 
  patagoniensis 
  

   (Favre) 
  and 
  Himalayites 
  hoolerhill- 
  

   ensis 
  (Favre) 
  

  

  Mayer 
  River 
  beds 
  1 
  Porphyrivic 
  tuffs 
  

   Hatcher 
  Hauthal 
  

  

  Neocomian 
  in 
  a 
  broad 
  sense 
  to 
  cover 
  everything 
  from 
  the 
  Beria- 
  

   sian 
  to 
  the 
  Aptian 
  inclusive, 
  so 
  that 
  it 
  is 
  practically 
  synonymous 
  

   with 
  Lower 
  Cretaceous. 
  

  

  The 
  Lower 
  Cretaceous 
  of 
  the 
  Argentine 
  Cordillera 
  is 
  found 
  in 
  

   two 
  separate 
  areas 
  which 
  show 
  distinct 
  characteristics. 
  The 
  

   northern 
  area, 
  which 
  has 
  been 
  more 
  thoroughly 
  studied, 
  is 
  in 
  the 
  

   provinces 
  of 
  Mendoza 
  and 
  Neuquen 
  where 
  a 
  belt 
  of 
  Lower 
  Cre- 
  

   taceous 
  rocks 
  extends 
  almost 
  without 
  interruption 
  from 
  the 
  

  

  