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Description

The following 4 species are depicted:

Mobulavermis adustus: A pelagic panarthropod of the family Kerygmachelidae from the Cambrian Pioche Formation of Nevada. So far it possessed the largest number of swimming flaps among Paleozoic panarthropods, although the two specimens, which are described in the literature, are only known from posterior parts of the body. Estimates of the total body length range from 30 to 50 cm. A private specimen is known, which preserves the head and confirms the presence of frontal appendages, which were inferred from the related Kerygmachela.

Saltasaurus loricatus: A titanosaurian sauropod from the Late Cretacous Lecho Formation of Argentina. With a length between 8.5 and 12 m it was relatively small for a sauropod, but robust and armored with osteoderms. The exact arrangement of the osteoderms is not known as far as I am aware.

Simurghia robusta: A nyctosaurid pterosaur from the Ouled Abdoun Basin of Morocco, dating to the very end of the Cretaceous. The pterosaur fossils found there are fragmentary, but important, since the show that azdarchid pterosaurs were not the only remaining group at the end of the Cretaceous as has been thought in the past. Simurghia itself is only known from a single humerus and was referred to the family nyctosauridae based on the shape of the deltapectoral crest of the bone. My reconstruction is therefore highly speculative. I based it on more complete nyctosaurids, while trying to make it distinct, but I am satisfied with how it turned out.

Psilopterus: A genus of phorusrhacid containing at least four species that lived in South America from the Oligocene to possibly the Late Pleistocene (a roughly 96 thousand years old humerus matching Psilopterus has been found, making it the latest known surviving genus of phorusrhacid). With a height of roughly 80 cm Psilopterus is one of the smallest members of the phorusrhacids. It had even been suggested that the genus was still capable of flight, but this has been rejected in 2003.

Description

The following 4 species are depicted:

Mobulavermis adustus: A pelagic panarthropod of the family Kerygmachelidae from the Cambrian Pioche Formation of Nevada. So far it possessed the largest number of swimming flaps among Paleozoic panarthropods, although the two specimens, which are described in the literature, are only known from posterior parts of the body. Estimates of the total body length range from 30 to 50 cm. A private specimen is known, which preserves the head and confirms the presence of frontal appendages, which were inferred from the related Kerygmachela.

Saltasaurus loricatus: A titanosaurian sauropod from the Late Cretacous Lecho Formation of Argentina. With a length between 8.5 and 12 m it was relatively small for a sauropod, but robust and armored with osteoderms. The exact arrangement of the osteoderms is not known as far as I am aware.

Simurghia robusta: A nyctosaurid pterosaur from the Ouled Abdoun Basin of Morocco, dating to the very end of the Cretaceous. The pterosaur fossils found there are fragmentary, but important, since the show that azdarchid pterosaurs were not the only remaining group at the end of the Cretaceous as has been thought in the past. Simurghia itself is only known from a single humerus and was referred to the family nyctosauridae based on the shape of the deltapectoral crest of the bone. My reconstruction is therefore highly speculative. I based it on more complete nyctosaurids, while trying to make it distinct, but I am satisfied with how it turned out.

Psilopterus: A genus of phorusrhacid containing at least four species that lived in South America from the Oligocene to possibly the Late Pleistocene (a roughly 96 thousand years old humerus matching Psilopterus has been found, making it the latest known surviving genus of phorusrhacid). With a height of roughly 80 cm Psilopterus is one of the smallest members of the phorusrhacids. It had even been suggested that the genus was still capable of flight, but this has been rejected in 2003.