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Caiman ancestor swam on saltwater?

Adam Khor · 2019-08-18 02:23:35

Two new crocodilians found in Panama appear to be transitional between gators and caimans: http://www.livescience.com/27613-crocodilian-species-fill-fossil-gap.html

August 2019

#1

Adam Khor

Moderators, Science, Health & Environment Moderators Posts: 5,279 ✭

Join Date: March 2011

Posts: 3885

Two new crocodilians found in Panama appear to be transitional between gators and caimans:

http://www.livescience.com/27613-crocodilian-species-fill-fossil-gap.html

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/* * These styles apply ONLY to the header and footer assets. */ /* * These styles apply ONLY to the header and footer assets. */ /* Nav Area */ .nav-area { position:fixed; /* change back to sticky when we remove marks desktop hack pocket */ height:30px; width:100%; background:#4f6a9f; border-bottom:1px solid #637faf; top:0; z-index:999999; font: 12px Verdana, Geneva, sans-serif; font-weight: 700; } #nav { list-style:none; margin:0 auto; padding:0; height:22px; font: 13px Verdana, Geneva, sans-serif; font-weight: 700; line-height:14px; min-width:956px; max-width:1400px; z-index:999999; } #nav > li{ float:left; border-left:1px solid #637faf; border-right:1px solid rgba(0, 0 ,0, 0); position:relative; width: 19.70%; z-index:999999; } #nav > li:first-child { margin:0; border-left: 1px solid rgba(0, 0 ,0, 0); z-index:999999; } #nav > li.hover:first-child{ border-left: 1px solid #c8c8c8; z-index:999999; } #nav > li:last-child { margin:0; border-right: 1px solid rgba(0, 0 ,0, 0); z-index:999999; } #nav > li.hover:last-child{ border-right: 1px solid #c8c8c8; z-index:999999; } #nav > .active > a, #nav > li.hover, #nav > li.hover > a { background:#fff z-index:999999;; } #nav > li.navLeftBorder { border-left-color: #c8c8c8; z-index:999999; } #nav > li.navRightBorder { border-right-color: #c8c8c8; z-index:999999; } .navLeftBorder .nav-drop-menu { margin-left: -1px; z-index:999999; } #nav li:hover { position:relative; z-index:999999; } #nav > li > a { display:block; text-align:center; padding:4px 6px; height:15px; color:#fcfcfc; z-index:999999; } #nav.scaling-active > li > a { padding:4px 0; z-index:999999; } #nav.scaling-active > li.hover > a { color:#2E4A80; z-index:999999; } #nav a:hover{ text-decoration:none; z-index:999999; } #nav .drop { position:absolute; left:0; top:auto; width:100%; border: solid #c8c8c8; border-width:0 1px 1px; background:#FFFFFF; display:none; padding-left:0px; overflow-x:hidden; max-height:85vh; z-index:999999; } /*#nav .drop li:hover > .drop,*/ #nav > li.hover > .drop{ display:block; z-index:999999; } #nav .drop .drop { left:6px; position:relative; width:100%; border:none; clear:both; z-index:999999; } #nav .drop .drop .drop { top:0; left:6px; width:100%; z-index:999999; } div.columncontainer { display:block; overflow:hidden z-index:999999; } div.columncontainer .column { margin-bottom:-2000px; padding-bottom:2000px; z-index:999999; } .submenu-open > a { font-weight:bold; z-index:999999; } #nav .submenu-open > div { display:block; z-index:999999; } #nav .columns-1 { min-width:218px; max-width:242px; z-index:999999; } #nav .columns-2, #nav .columns-2 .columncontainer { width:441px; z-index:999999; } #nav .columns-3, #nav .columns-3 .columncontainer { width:662px; z-index:999999; } #nav .columns-3, #nav .columns-2, #nav .columns-1 { padding-bottom: 10px; z-index:999999; } .talktomenu { all:unset; } ul { position: relative; list-style: none; padding: 2px; width:100%; margin: 0; background: #4f6a9f; z-index:9999; } ul li { display: block; position: relative; float: left; background: #4f6a9f; width: 100%; z-index:999999 !important; } /* This hides the dropdowns */ li ul { display: none; } ul li a { display: block; padding: 1em; text-decoration: none; white-space: nowrap; color: #fff; } ul li a:hover { background: #2c3e50;} li:hover > ul { display: block; position: absolute; z-index:999999 !important; } li:hover li { float: none; } li:hover a { background: #2E4A80;; } li:hover li a:hover { background: #2c3e50; } .main-navigation li ul li { border-top: 0; } ul ul ul { left: 100%; top: 0; } ul:before, ul:after { content: " "; display: table; } ul:after { clear: both; } .footer { background: #f5f5f6; color: #555a62; font: 12px Verdana,Arial,Helvetica,sans-serif; line-height: 1.5; padding: 18px 0; } .footer-wrap { padding-left: 18px; padding-right: 18px; max-width: 1236px; margin: 0 auto; } .footer a { color: #2e4a80; } .footer a:hover { color: #2e4a80; } .footer-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; margin: -3px; } .footer-col { padding: 0 3px; } .footer-col-copyRight { justify-content: flex-start; } .footer-col-logo { justify-content: flex-end; } .footer-col-copyRight, .footer-col-logo { flex: 1; display: flex; } .logo { width: 120px; height: 28px; opacity: 0.6; } @media screen and (max-width: 768px) { .footer-row { display: block; } .footer-col { width: 100%; text-align: center; margin: 6px 0; } .footer-col:first-child { margin-top: 0; } .footer-col:last-child { margin-bottom: 0; } .footer-col-copyRight, .footer-col-logo { justify-content: center; } .logo { margin: 0 auto; } }