Scansoriopterygidae to scale

Adding a few more scansoriopterygids
(Figs. 2, 3) to the large reptile tree (LRT, 1068 taxa subset, Fig. 4) brings us to a tipping point that needs a ‘to scale’ illustration. One is provided here (Fig. 1; click to enlarge).

Figure 1. Click to enlarge. Scansoriopterygids to scale.

Figure 1. Click to enlarge. Scansoriopterygids to scale.

These are primitive birds,
all nesting this side of the Solnhofen birds of the Late Jurassic.

Figure 1. Jeholornis curves is a smaller specimen than J. prima and differently proportioned. The two are not congeneric, but both are related scansoriopterygids.

Figure 1. Jeholornis curvipes is a smaller specimen than J. prima and differently proportioned. The two are not congeneric, but both are related scansoriopterygids.

Scansoriopterygids evolved to become
a wide variety of feathered dinosaurs, many with long tails, but a few had short stubs and long tail feathers.

Figure 2. Jeholornis prima is longer and larger than J. curvipes.

Figure 2. Jeholornis prima is longer and larger than J. curvipes.

Figure 3. Scansoriopterygidae includes two Solnhofen birds traditionally labeled Archaeopteryx, but clearly distinct genera. Note, none of these taxa have a styliform bone, as originally figured in Yi qi.

Figure 3. Scansoriopterygidae includes two Solnhofen birds traditionally labeled Archaeopteryx, but clearly distinct genera. Note, none of these taxa have a styliform bone, as originally figured in Yi qi.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.