Frederik Spindler
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View article: Insights into stem Batomorphii: A new holomorphic ray (Chondrichthyes, Elasmobranchii) from the upper Jurassic of Germany
Insights into stem Batomorphii: A new holomorphic ray (Chondrichthyes, Elasmobranchii) from the upper Jurassic of Germany Open
The Late Jurassic fossil deposits of southern Germany, collectively known as the ’Solnhofen Archipelago’, are one of the world’s most important sources of Mesozoic vertebrates. Complete skeletons of cartilaginous fishes (Chondrichthyes), w…
View article: A diadectid skin impression and its implications for the evolutionary origin of epidermal scales
A diadectid skin impression and its implications for the evolutionary origin of epidermal scales Open
Corneous skin appendages are not only common and diverse in crown-group amniotes but also present in some modern amphibians. This raises the still unresolved question of whether the ability to form corneous skin appendages is an apomorphy …
View article: A pterosaurian connecting link from the Late Jurassic of Germany
A pterosaurian connecting link from the Late Jurassic of Germany Open
View article: A new specimen of Solnhofia parsonsi from the Upper Jurassic (Kimmeridgian) Plattenkalk deposits of Painten (Bavaria, Germany) and comments on the relationship between limb taphonomy and habitat ecology in fossil turtles
A new specimen of Solnhofia parsonsi from the Upper Jurassic (Kimmeridgian) Plattenkalk deposits of Painten (Bavaria, Germany) and comments on the relationship between limb taphonomy and habitat ecology in fossil turtles Open
The limestones of the Solnhofen area in southern Germany are one of the most important fossil Lagerstätten from the entire Mesozoic era, especially famous for the exquisitely preserved vertebrates. The turtles from the Solnhofen Limestone …
View article: Petrodactyle wellnhoferi gen. et sp. nov.: A new and large ctenochasmatid pterosaur from the Late Jurassic of Germany
Petrodactyle wellnhoferi gen. et sp. nov.: A new and large ctenochasmatid pterosaur from the Late Jurassic of Germany Open
View article: A New caseid Synapsid from the Permian (Guadalupian) of the Lodève basin (Occitanie, France)
A New caseid Synapsid from the Permian (Guadalupian) of the Lodève basin (Occitanie, France) Open
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View article: A Juvenile Specimen of Archaeorhynchus Sheds New Light on the Ontogeny of Basal Euornithines
A Juvenile Specimen of Archaeorhynchus Sheds New Light on the Ontogeny of Basal Euornithines Open
The ontogenetic development of extant birds is characterized by rapid growth, bone fusion and an early onset of flight ability. In contrast, little is known about how these ontogenetic traits evolved in the bird stem lineage, and the avail…
View article: The integument of pelagic crocodylomorphs (Thalattosuchia: Metriorhynchidae)
The integument of pelagic crocodylomorphs (Thalattosuchia: Metriorhynchidae) Open
View article: A faunivorous early sphenacodontian synapsid with a diastema
A faunivorous early sphenacodontian synapsid with a diastema Open
Our knowledge on early sphenacodontian and edaphosaurid synapsids, the group that includes the origin of the mammalian lineage, largely arose from the Pennsylvanian Garnett locality in Kansas.A preliminary revision of the former "Haptodus"…
View article: Callibrachion and Datheosaurus, two historical and previously mistaken basal caseasaurian synapsids from Europe
Callibrachion and Datheosaurus, two historical and previously mistaken basal caseasaurian synapsids from Europe Open
This study represents a re-investigation of two historical fossil discoveries, Callibrachion gaudryi (Artinskian of France) and Datheosaurus macrourus (Gzhelian of Poland), that were originally classified as haptodontine-grade sphenacodont…
View article: The basal Sphenacodontia – systematic revision and evolutionary implications
The basal Sphenacodontia – systematic revision and evolutionary implications Open
The presented study comprises a complete morphological and phylotaxonomic revision of basal Sphenacodontia, designated as the paraphyletic ‘haptodontines’. Ianthodon from the Kasimovian is known from newly identified elements, including mo…