841 followers
130 mya. (Some) dinosaurs had belly-buttons https://t.co/IKboft5LDg
130 mya. (Some) dinosaurs had belly-buttons https://t.co/IKboft5LDg
RT @pantheo27705718: 最古の臍の傷跡から、恐竜に「へそ」があったことが判明。 遼寧省産プシッタコサウルス、性成熟に近い標本。レーザー刺激蛍光法により、臍は腹部の一対の鱗片列で区切られた細長い正中線構造である事が明らかに。これまで新生代より前の有羊膜類では未確…
https://t.co/6HIILOaJdU too valuable to cut into and look for evidence of continued growth, before death... 😭😭😭😭 but it looks like a baby, or maybe three years old or less from where i'm sitting.