We do? Maybe you can specualate about the 2% of vertebrate fossils found, but show me the evolutionary tract of the 98% of fossils which are plants and invertebrates. Pick one and show me how well you can track it.
Pfff, seems like I actually have to put in some work here. Alrgiht, here goes. First of all, the fossil record is but one avenue of research into evolutionary biology. But I suppose I'll make a list for you, not of invertebrates, but it's still quite impressive. (to other readers, sorry, it will be rather long)
First, invertebrate to vertebrate:
1) Pikaia
2) Yunannozoon
3) Haikouella
4) Conodonts
5) Placoderms (these had jaws)
Right, in the fish department now:
6) Cheirolepis
7) Osteolepis (early lobe finned fish, and showing an amfidian like skull)
8) Eusthenopteron (Amfibian skull, and bane and muscle attachments of fins similar as those found in early tetrapod limbs)
9) Panderichthys (very tetrapod like. Has flattened body as well as foot like fins)
10) Acanthostega (fin to foot transition almost complete)
Early tetrapod time!:
11) Tiktaalik (Fins posses wrist and finger bones, and has a neck and both lungs and gills)
12) Ichthyostega (Shoulder and pelvis very tetrapod like and has a very similar rib cage to tetrapods)
Early land amphibians: (By now I would say I can quit, but I'll just keep going)
13) Pteroplax (skull bone patterns similar to Ichthyostega and remnants of gills can be found at the neck)
14) Proterogyrinus (Has amphibian like skull, but limbs and spine have reptilian characteristics)
15) Solenodonsaurus (No more lateral line on the head)
16) Hylonomus &
17) Paleothyris (both small lizard like creatures that still have an amphibian like skull)
Argh! It's the reptilians!:
18) Pelycosaurs (synapsids with differentiated teeth)
19) Therapsids (mamal like reptiles with complex jaws and teeth. Legs vertically attached under their bodies)
20) Proto mamals (whole bunch of 'em, in these we see further development of the skull)
Right, mamal department!:
21) Early placentals (small, rodent like organisms)
22) Phenacolemur Jepseni &
23) Teilhardina Asiatica (Both early primates, whose skulls don't really look like primates, but the teeth are getting there)
24) Amphipitecus &
25) Pondaungia Cotteri (from these fossils we can see the brain size increasing, while the nose was getting shorter)
Ape country!:
26) Propliopithecus Haeckell (teeth became a defining characteristic of apes)
27) Aegyptopithicus Zeuxis (Has larger and "rounder" brain)
28) Proconsul (characteristics of both apes and monkeys, also, sexual dimorphism pops up)
29) Kenyapithecus (descendant from Proconsul, and ancestor to both man and the great apes)
30) Australopithecus Afarensis (ape like, but bipedal)
31) Australopithecus Africanus (larger brain, teeth similar to those found in the "homo" genus)
Which is the next stage (and the final one) Humans!:
32) Homo Habilis (sits on the Australopitecine-Homo boundary. Has larger brain, and used tools)
33) Homo Erectus (Larger brain again, an used fire)
34) Homo Sapiens (Brain between Homo Erectus and Homo Sapiens Sapiens, also much finer teeth then predecessor)
35) Homo Sapiens Sapiens
Nice list eh? yes, those weren't invertebrates. I can give you a clue why there are little fossils of them though. Here goes: "NO HARD PARTS". So, are you saying god made all invertebrates?
Yes most evos avoid the invertebrates. I wonder if NosyNed is going to admonish you for your complete lack of knowledge of invertebrates.
You evidently don't know that invertebrates make up 98% of all known species that have been identified. You know how we discovered most of them? They fossilized. Yes, both soft bodied invertebrates and hard bodied invertebrates. Most invertebrates have HARD PARTS. Sorry to inform you of this TINY fact. Many are found in the Cambrian explosion. Both soft bodied fossils and hard bodied fossils. If the Cambrian is full of these diverse phyla and lifeforms, then why zilch before 580mya? Why nothing but single celled organisms and multicelled algae? Then "Poof" a smorgasborg of diverse complex organisms. Organisms with eyes, digestive systems, nervous systems, breathing systems, legs, shells, yet we have no evidence of how these systems evolved from algae and single cells prior to 580mya.
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