A long long time ago, in a galaxy ... right here Task
Given a positive integer return the geologic era and period it was that many million years ago.
Input/output
The input is a string or integer; the output is a string. Eras and periods are separated by slashes (/). Input will always be between 0 and 542 inclusive
Data
The possible outputs for eras and periods and their corresponding time periods (in millions of years) are:

Cenozoic 0 - 66

Quaternary 0 - 3
Neogene 4 - 23
Paleogene 24 - 66


Mesozoic 67 - 252

Cretaceous 67 - 145
Jurassic 146 - 201
Triassic 202 - 252


Paleozoic 253 - 542

Permian 253 - 299
Carboniferous 300 - 359
Devonian 360 - 419
Silurian 420 - 444
Ordovician 445 - 485
Cambrian 486 - 542



Submissions will be scored by byte count. Lowest byte count wins.
Test cases
314 -&gt; Paleozoic/Carboniferous
0 -&gt; Cenozoic/Quaternary
542 -&gt; Paleozoic/Cambrian
100 -&gt; Mesozoic/Cretaceous
Befunge-93, 537 bytes
&amp;:&quot;C&quot;`#v_&quot;neC&quot;&gt;,,,&quot;/ciozo&quot;,,,,,,:4`#v_&quot;auQ&quot;,,,&quot;yranret&quot;&gt;,,,,,,,@
*54+65:&lt;   &gt;  ^&quot;Mes&quot;_v#!`*+3          &gt;#&gt;#             ^#
 &quot;leogene&quot;&lt;^&quot;ale&quot;,&quot;P&quot;&lt;     v_v#`*64:&lt;&gt;        &quot;enegoeN&quot;^
,,,&quot;Cre&quot;&lt; ^ ,,&quot;Pa&quot;_v#!`&quot;C&quot;:&lt; &gt;       ^^&quot;taceous&quot;
`*2&quot;e&quot;:_^#`*+*5545:&lt;v_v#
 ,&quot;T&quot;_v#!`*+*543+65:&lt; &gt;&quot;J&quot;,&quot;cissaru&quot;  ^&quot;riassic&quot;
*&quot;d&quot;3:&lt;v_v#!`
&quot;rmian&quot;&lt; &gt;:&quot;x&quot;3*`!#v_:&quot;F&quot;6*`#v_&quot;D&quot;,v  ^&quot;Pe&quot;
&quot;ous&quot;,,,,,,&quot;Carbon&quot;&lt;         :        ^&quot;ifer&quot;
&quot;enovian&quot;                          &lt;  ^
&quot;brian&quot;,&quot;C&quot;_v#`*&quot;Q&quot;6_v#`*&quot;Y&quot;5&lt;        ^&quot;am&quot;
&quot;an&quot;,,,&quot;Ord&quot;&lt;        &gt;&quot;S&quot;,&quot;nairuli&quot;   ^&quot;ovici&quot;

Try it online!
This is basically a giant if/elsif/if chain (or rather, two of them), one for the era, and one for the period.