
1) Dimetrodon 2) Edaphosaurus 3) Ictodosaur 4) Pelycosaur 5) Protomammal 6) Therapsid
Found on
https://www.crosswordclues.com/clue/synapsid

1) Reptile 2) Reptilian 3) Synapsid reptile
Found on
https://www.crosswordclues.com/clue/synapsid

Synapsids (Greek, `fused arch`), synonymous with theropsids (Greek, `beast-face`), are a group of animals that includes mammals and every animal more closely related to mammals than to other living amniotes. They are easily separated from other amniotes by having a temporal fenestra, an opening low in the skull roof behind each eye, leaving a ...
Found on
http://en.wikipedia.org/wiki/Synapsid

(pronounced sin-AP-sid) Synapsids are a group of animals distinguished by having a skull with an extra low opening behind the eyes; this opening gave these animals stronger jaw muscles and jaws (the jaw muscles were anchored to the skull opening). Synapsids include the mammals , and extinct animals such as Dimetrodon . The pelycosaurs were early sy...
Found on
http://www.enchantedlearning.com/subjects/dinosaurs/glossary/

n. A vertebrate distinguished by a skull with one pair of openings in the sidebehind the eyes, e.g., mammals and their close relatives.
Found on
http://www.ucmp.berkeley.edu/glossary/gloss7metazoa.html

n. A vertebrate distinguished by a skull with one pair of openings in the sidebehind the eyes, e.g., mammals and their close relatives.
Found on
http://www.ucmp.berkeley.edu/glossary/glossary_7.html

[
n] - extinct reptile having a single pair of lateral temporal openings in the skull
Found on
http://www.webdictionary.co.uk/definition.php?query=synapsid
synapsid reptile noun extinct reptile having a single pair of lateral temporal openings in the skull
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.