Yes sand dollar is an echinoderm.
Horizontial or vertical, depending on where you cut it.
A sand dollar
Sand dollars.
Echinoderm
Sand dollar
Echinoderm
sand dollar
Sand Dollar
Yes sand dollars are a kind of sea urchins that are flattened and can burrow itself.
echinoderm
A sand dollar was called a geopolitical dollar
"Is a Sand Dollar a vertebrate?" No. A sand dollar is not a vertebrate because it does not have a backbone.