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Description
In these days that I have been making several prehistoric animals for an updated version of my real-life size chart, I was curious to see from another perspective the size of the largest Pterosaurs, not by species, but by period. You see, most of the comparison charts of Pterosaurs tend to include the largest individuals and usually tend to be mostly Azhdarchids (obviously) and the occasional Pterodactyloid like Tropeognathus or Pteranodon, all in the Cretaceous. And so I did a bit of searching and I ran into the largest pre-Cretaceous Pterosaurs, the biggest flying animals of each period, at least those that are known by remnants. Although they are not huge flying creatures the size of airplanes, it is in itself a bit fascinating to think that these species at the time were the largest thing that has crossed the skies until that moment.

Above: Harpactognathus gentryii, a large Rhamphorhynchid pterosaur found in the Morrison formation, which lived in the late jurassic, is only known by a holotype formed by the front part of the skull. As its appearance is inferred from the most closest relative, the Scaphognathus, the length of the head has been calculated in around 30 centimeters, and with a possible wingspan of 2.5 meters.
Head and body based on original paper picture draws and Scaphognathus reconstructions.

Below: Caviramus schesaplanensis, is a pterosaur from the Late Triassic, discovered in the Kössen Formation, Switzerland. Its unusual appearance, such as its crest, the teeth, and its thin shape are a fascinating expression of what pterosaurs could develop in their first tens of millions of years of existence. At its point probablt this was the first great flying animal on the planet, the largest flyer of the triassic with 1.3 meters in wingspan, and a weight of approximately 1 Kg, which although it was not a giant, was quite impressive at a point of time where the largest flying animals were giant insects of around 70 cm of wingspan.
Head and body based on Mark Witton Caviramus reconstruction

Description
In these days that I have been making several prehistoric animals for an updated version of my real-life size chart, I was curious to see from another perspective the size of the largest Pterosaurs, not by species, but by period. You see, most of the comparison charts of Pterosaurs tend to include the largest individuals and usually tend to be mostly Azhdarchids (obviously) and the occasional Pterodactyloid like Tropeognathus or Pteranodon, all in the Cretaceous. And so I did a bit of searching and I ran into the largest pre-Cretaceous Pterosaurs, the biggest flying animals of each period, at least those that are known by remnants. Although they are not huge flying creatures the size of airplanes, it is in itself a bit fascinating to think that these species at the time were the largest thing that has crossed the skies until that moment.

Above: Harpactognathus gentryii, a large Rhamphorhynchid pterosaur found in the Morrison formation, which lived in the late jurassic, is only known by a holotype formed by the front part of the skull. As its appearance is inferred from the most closest relative, the Scaphognathus, the length of the head has been calculated in around 30 centimeters, and with a possible wingspan of 2.5 meters.
Head and body based on original paper picture draws and Scaphognathus reconstructions.

Below: Caviramus schesaplanensis, is a pterosaur from the Late Triassic, discovered in the Kössen Formation, Switzerland. Its unusual appearance, such as its crest, the teeth, and its thin shape are a fascinating expression of what pterosaurs could develop in their first tens of millions of years of existence. At its point probablt this was the first great flying animal on the planet, the largest flyer of the triassic with 1.3 meters in wingspan, and a weight of approximately 1 Kg, which although it was not a giant, was quite impressive at a point of time where the largest flying animals were giant insects of around 70 cm of wingspan.
Head and body based on Mark Witton Caviramus reconstruction