{| {| elevated. | {| | | {| {|Trenton gravels. |Palæolithic {| {| | implements {| {| | from Trenton. {| {|Completion of Great |Brachycephalic {| {| Lakes. | skulls from {| {| | Trenton. {|5. Post-glacial. {| | {| {|Elevation of North |Hearth on former {| {| Atlantic subsiding.| shore of L. {| {| | Ontario. {| {|Reindeer in Ohio |Skulls of {| {| Valley. | Pontimelo {| {| | and Rio {| {| | Negro, S.A. {| {|Climate cold. | {| {|Lacustrine deposits. |Argillite {| {| | implements. {| | | {| {|Seaboard deposits. |Earliest {| {| | kitchen-middens. {|1. Champlain {|Land below present |Limonite bones {| {| level. | in Florida. {| or {|Climate mild. |Lagoa Santa bones {| {| | in Brazil. {| Fluvial. {|Elephant, mastodon | {| {| ohioticus, | {| {| megatherium, | Recent. {| {| giant bison, | {| {| horse (all now | {| {| extinct). | {| | | {| {| River deposits. |Quartz and jasper {|2. Present {| | implements. {| {|Formation of forest |Pottery. Later {| or {| loam. | shell heaps. {| {| |Ohio mounds. {| Alluvial. {| |Relics of {| {| | existing or {| {| | known tribes. -------------+-------------------+---------------------+-----------------