258  BIBLIOGRAPHY    OF    NORTH    AMERICAN    GEOLOGY 
Osborn  (Henry  Fairfield)— Continued. 
6.  Systematic  revision  of  the  American  Eocene  primates  and  of  the  rodent  family 
Myxodectidse. 
Abstract:  N.Y.  Acad.  Sci.,  Annals,  vol.  14,  p.  Ill,  1901. 
7.  Homoplasy  as  a  law  of  latent  or  potential  homology. 
Am.  Nat.,  vol.  36,  pp.  259-271,  6  figs.,  1902. 
Discusses  the  independent  evolution  of  identical  structures  in  teeth  of  different  families  of 
mammals  as  a  form  of  homology  which  has  heretofore  been  defined  as  homoplasy. 
8.  The  law  of  adaptive  radiation. 
Am.  Nat.,  vol.  36,  pp.  353-363,  3  figs.',  1902. 
Quotes  from  the  author's  previous  papers  bearing  upon  this  law  and  shows  how  it  is  exhib- 
ited in  the  geographic  distribution  of  orders,  families,  and  related  contemporaneous  forms. 
9.  Dolichocephaly  and  brachycephaly  in  the  lower  mammals. 
Am.  Mus.  Nat.  Hist.,  Bull.,  vol.  16,  pp.  77-89,  5  figs.,  1902. 
Discusses  these  factors  in  cranial  evolution  and  their  correlation  with  similar  ours  in  the 
trunk  and  limbs. 
10.  The  four  phyla  of  Oligocene  Titanotheres.     Titanothere  contributions,  no.  4. 
Am.  Mus.  Nat.  Hist.,  Bull.,  vol.  18,  pp.  91-109,  13  figs.,  1902. 
Discusses  the  general  characters  of  the  material  and  their  stratigraphic  position. 
11.  American  Eocene  Primates  and  the  supposed  rodent  family  Mixodectidse. 
Am.  Mus.  Nat.  Hist..  Bull.,  vol.  16,  pp.  169  214,  10  figs.,  1902. 
Points  out  the  synonymous  genera  and  deserii.es  the  species,  including  several  new  ones. 
12.  Distinctive  characters  of  the  mid-Cretaceous  fauna. 
Can.  Geol.  Surv.,  Contr.  to  Can.  Paleont.,  vol.  3,  pi.  2,  pp.  5  21 .  1902. 
Discusses  relative  age  and  correlation  of  Cretaceous  formations  and  the  relations  of  their 
faunas  and  gives  in  tabular  form  the  geologic  distribution  of  Cretaceous  vertebrates. 
13.  Recent  zoopaleontology — new  vertebrates  of  the  mid-Cretaceous. 
Science,  newser.,  vol.  16",  pp.  673  676,  1902. 
Givesan  abstracl  of  a  report  by  Henry  F.  Osborn  and  Lawrence  M.  Lambe  on  "  Vertebrata 
from  the  mid-Cretaceous  Rocks  of  the  Northwest  Territory  of  Canada." 
14.  Recent  zoopaleontology:  a  remarkable  new  mammal  from  Japan,  its  relationship 
to  the  Californian  genus  Desmostylus,  Marsh — progress  of  the  exploration  for 
fossil  horses — the  perissodactyles  typically  polyphyletic. 
Science,  new  ser.,  vol.  16,  pp.  718-71.").  1902. 
15.  Recent  zoopaleontology:   Triassic  ichthyosaurs  from  California  and   Nevada- 
abandonment  of  the  Oligocene  and   Miocene  lake   basin   theory — studies  of 
Eocene  Mammalia  in  the  Marsh  collection,  Peabody  Museum. 
Science,  new  ser.,  vol.  16,  pp.  749-752,  1902. 
16.  Ornitholestes  hermanni,  a  new  compsognathoid  dinosaur  from  the  upper  Jurassic. 
Am.  Mus.  Nat.  Hist..  Bull.,  vol.  19,  pp.  459-464,  3  figs.,  1903/ 
17.  Glyptotherium  texanum,  a  new  glyptodont,  from  the  lower  Pleistocene  of  Texas. 
Am.  Mus.  Nat.  Hist.,  Bull.,  vol.  19,  pp.  491-494,  1  pi.,  1903. 
18.  The  skull  of  Creosaurus. 
Am.  Mus.  Nat.  Hist.,  Bull.,  vol.  19,  pp.  697-701,  2  figs.,  1903. 
19.  The  reptilian  subclasses  Diapsida  and  Synapsida  and  the  early  history  of  the 
Diaptosauria. 
Am.  Mus.  Nat.  Hist.,  Mem.,  vol.  1,  pt.  8,  pp.  451-507.  1  pl„  24  figs.,  1903 
Discusses  classification,  anatomy,  and  phylogeny  of  fossil  reptiles  and  defines  the  major 
classification  groups  and  genera. 
20.  Recent  zoopaleontology. 
Science,  new  ser.,  vol.  17,  pp.  :J12-314,  1903. 
Includes  a  brief  discussion  of  the  age  of  the  Fort  Union  beds  and  related  formations. 
21.  Recent  zoopaleontology. 
Science,  new  ser.,  vol.  17,  pp.  356-357,  1903. 
Discusses  the  age  of  the  typical  Judith  River  beds. 
