Placoderm Puns

Placoderms interest me a lot because of the large number of strange characteristics they had, the most notable being their plates and skulls.

So I want to know if kind of integument had those strange creatures, were they like arthropods in a "vertebrate version", containing all their muscles inside a completely bony covering or did they have the amount of fat and skin muscles on their plates? maybe more like the shell of a tortoise or would they just have a thin layer of skin over their armor that would leave a terrifying appearance visible and well marked?

I did not know what they were 2 minutes ago but okbr is the best teacher

A place for members of r/placoderms to chat with each other

https://www.deviantart.com/inmyarmsinmyarms/art/Seahorse-Placoderms-886967526

Now the first thing you need to understand about this project is that I don’t intend to take any of it half as serious as most people would give their projects, after all I do this for the fun of it. Second is that while I’ll be making realistic creatures, the path that earth will travel on won’t be the same as ours, and so new disasters and continental formations will be appearing in this project Third is that I’m bound to get the science wrong on multiple fronts, and while I’m not going to be making magical creatures, this will be akin to soft spec in an already fantasy world (things might be weird and disfunction in our world, but are reasonably explained when looking at the context of the world they come from)

If a placoderms went onto land, how much limbs would it have?

Here are a few criteria:

1. Small
2. Omnivorous
3. Marine, brackish or freshwater (thus raising the total to six species)

Here are the other seeds to consider:

AUTOTROPHS

All 2,698 species of the phylum Cyanobacteria

All 13 species of the genus Chlorella

All seven species of the genus Eisenia

All 17 species of the genus Alaria

All eight species of the genus Durvillaea

All nine species of the genus Ecklonia

All 24 species of the genus Saccharina

All 31 species of the genus Laminaria

Postelsia palmaeformis

Nereocystis luetkeana

Pelvetia canaliculata

All 300 species of the genus Sargassum

All 30 species of the genus Sagittaria

Hydrilla verticillata

All 15 species of the genus Vallisneria

All 16 species of the genus Zostera

ARTHROPODS

All 60 species of the genus Diaptomus

All four species of the genus Scylla

All 90 species of the genus Portunus

Ranina ranina

Both species of the genus Homarus

All five species of the genus Litopenaeus

All four species of the genus Penaeus

All four species of the genus Eriocheir

All 161 species of the genus Procambarus

All ten species of the genus Trachysalambria

All 31 species of the genus Euphausia

Endops yanagisawai

Phacops latrifrons

Both species of the genus Cyclopyge

Xiuqiella rectangular

MOLLUSKS

All four species of the genus Enteroctopus

All 16 species of the genus Amphioctopus

All three species of the genus Sepioteuthis

Both species of the genus Hippopus

Both species of the genus Sinonovacula

All three species of the genus Discoscaphites

ANNELIDS

All 29 species of the genus Serpula

Spirobranchus giganteus