226  BIBLIOGRAPHY    OF    NORTH    AMERICAN    GEOLOGY 
Lucas  (Frederic  A.) — Continued. 
6.  Vertebrates  from  the  Trias  of  Arizona. 
Science,  new  ser.,  vol.  14,  p.  376,  1901. 
Describes  briefly  material  recently  collected. 
7.  Animals  of  the  past. 
New  York,  McClure,  Phillips  &  Co.,  1901.     20+258  pp.,  41  rigs. 
8.  The  restoration  of  extinct  animals. 
Smithsonian  Inst.,  Ann.  Kept,  for  1900,  pp.  479-492,  8  pis.,  2  figs.,  1901. 
9.  The  dinosaurs  or  terrible  lizards. 
Smithsonian  Inst,,  Ann.  Rept.  for  1901,  pp.  641-646,  4  pis.,  1902. 
Reprinted  from  "Animals  of  the  past." 
10.  The  greatest  flying  creature,  the  pterodactyl  Ornithostoma. 
Smithsonian  Inst.,  Ann.  Rept,  for  1901,  pp.  654-659,  3  pis.,  1902. 
11.  Paleontological  notes — the  generic  name  Omosaurus — a  new  generic  name  for 
Stegosaurus  marshi. 
Science,  new  ser.,  vol.  16,  p.  435,  1902. 
Proposes  the  name  Dacentrurus  for  Omosaurus  Owen,  preoccupied,  and  Hoplitosaurus  for  the 
author's  previously  described  Stegosaurus  marshi. 
12.  Paleontological  notes — North  American  elephantids. 
Science,  new  ser.,  vol.  15,  pp.  554-555,  1902. 
Gives  notes  on  the  occurrence,  characters,  and  synonymy  of  these  fossils. 
13.  Constructing  an  extinct  monster  from  fossil  remains  [Triceratops.]. 
Sci.  Am.,  vol.  86,  p.  43,  3  figs.,  1902. 
14.  Animals  before  man  in  North  America. 
Ww  York,  D.  Appleton  and  Company,  1902.     291  pp.,  ill. 
15.  Notes  on  the  osteology  and  relationship  of  the  fossil  birds  of  the  genera  Hesper- 
ornis,  Hargeria,  Baptornis,  and  Diatryma. 
U.  S.  Nat.  Mus.,  Proc,  vol.  26,  pp.  545-556,  8  figs.,  1903. 
16.  A  skeleton  of  Hesperornis. 
Smith.  Misc.  Coll.,  vol.  45,  p.  95,  1  pi.,  1903. 
17.  A  new  plesiosaur. 
Smith.  Misc.  Coll.,  vol.  45,  p.  96,  1  pi.,  1903. 
18.  The  greatest  flying  creature,  the  great  pterodactyl  Ornithostoma. 
Sci.  Am.  Suppl.,  vol.  55,  pp.  22645-22646,  illus.,  1903. 
Discusses  flight  in  birds  and  in  the  Ornithostoma  as  indicated  by  its  anatomy. 
19.  A  new  batrachian  and  a  new  reptile  from  the  Trias  of  Arizona. 
IT.  S.  Nat.  Mus.,  Proc,  vol.  27,  pp.  193-195,  2  pis.,  1904. 
20.  Paleontological  notes.     Pleurocoelus  versus  Astrodon.     The  armor  of  Zeuglodon. 
Science,  new  ser.,  vol.  19,  pp.  436-437,  1904. 
21.  The  dinosaur  Trachodon  annectens. 
Smith.  Misc.  Coll.,  vol.  45  (Quar.  Issue,  vol.  1,  pts.  3  and  4),  pp.  317-320,  2  pis.,  4  figs.,  1904. 
Describes  occurrence  and  characters  of  fossil  remains,  and  restorations. 
22.  Eocene  whales. 
Nature,  vol.  71,  p.  102,  1904. 
Note  on  the  occurrence  in  Eocene  deposits  of  southern  United  States  of  fossil  remains  which 
may  throw  light  upon  the  ancestry  of  the  whale. 
Ludlow  (Edwin). 
1.  The  coal  fields  of  Las  Esperanzas,  Coahuila,  Mexico. 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  32,  pp.  140-156,  6  figs.,  1902. 
Describes  the  geology  of  the  area,  and  character  and  production  of  the  coal  (Cretaceous). 
Lull  ( Richard  Swan ) . 
Skull  of  Triceratops  serratus. 
Am.  Mus.  Nat.  Hist.,  vol.  19,  pp.  685-695,  1  pi.,  1  fig.,  1903. 
