answersLogoWhite

0

The first ancestors of mammals appeared in the Carboniferous period about 358.9 ± 0.4 million years ago.

Before this time there were no mammal or mammal like creatures present to become fossilised.

User Avatar

Wiki User

11y ago

What else can I help you with?

Related Questions

Mammals produce high or low numbers of offspring?

Mammals produve low number of offspring.


Where is the ignition switch located on a 86 Oldsmobile Cutlass Ciera?

It is on the upper left side of the steering column, low down, near the similar looking low-high beam switch. Both of those are manipulated by rods instead of being in the upper column.


Where is the ignition switch on a firebird?

On the top side of the steering column about halfway down, the high beam/low beam headlight switch should be bolted to the column right beside it. Inside the vehicle.


How do you turn on 1998 BMW z3 fog lights?

There is a small, round, black button to the left of the steering column down low on the dash.


Where is the fuse box in a 1996 GMC Suburban?

On my 93 it's on the left hand side of the steering column down low in the dash. The ash tray in on the right of the column and the fuse box is on the left behind removable panel.


Where is the dimmer switch on a 1983 Oldsmobile Cutlass?

83 cutlass is either in the steering column (down low away from the turn signal probably, or in the column "multifunction switch", possibly on the floor, but one would assuem you have looked. Relentless


What is a 89 Ciera high low relay location?

On my 87 Cutlass Ciera the hi/low switch for the headlights is actually bolted to the steering column, not quite half way down, towards the left-hand side (close to the clamp which attaches the steering column to the underside of the dash). The switch is pressed by a steel rod that snakes its way up the steering column to the turn signal lever.


Why do mammals produce high and low numbers of offspring?

Mammals produce a low number of offspring. Take humans, cats or dogs for example xHope i helped ;P


Where is the turn signal flasher unit located on a 2002 Mazda Tribute DX?

To the right hand side of the steering column behind the fascia, down quite low.


Why the pressure drop is low in packed column?

air reduction


What are the adaptations of diving mammals to low oxygen concentration?

buhb


Do mammals produce high or low numbers of offspring?

It depends on the size of the mammal.