Exceptionally preserved shark fossils from Mexico elucidate the long-standing enigma of the Cretaceous elasmobranch Ptychodus

R Vullo, E Villalobos-Segura… - … of the Royal …, 2024 - royalsocietypublishing.org
The fossil fish Ptychodus Agassiz, 1834, characterized by a highly distinctive grinding
dentition and an estimated gigantic body size (up to around 10 m), has remained one of the …

[HTML][HTML] A diverse assemblage of Ptychodus species (Elasmobranchii: Ptychodontidae) from the Upper Cretaceous of Ukraine, with comments on possible …

M Amadori, O Kovalchuk, Z Barkaszi, L Giusberti… - Cretaceous …, 2023 - Elsevier
New isolated teeth from the Upper Cretaceous of Ukraine and belonging to the extinct
durophagous shark Ptychodus are described here. The taxonomic identification of the …

The extinct shark, Ptychodus (Elasmobranchii, Ptychodontidae) in the Upper Cretaceous of central-western Russia—The road to easternmost peri-Tethyan seas

M Amadori, SV Solonin, AV Vodorezov… - Journal of vertebrate …, 2022 - Taylor & Francis
Isolated teeth belonging to the genus Ptychodus Agassiz, 1834 (Chondrichthyes;
Elasmobranchii) from the Upper Cretaceous of the Ryazan and Moscow Oblast regions …

[HTML][HTML] Fossil marine vertebrates (Chondrichthyes, Actinopterygii, Reptilia) from the Upper Cretaceous of Akkermanovka (Orenburg Oblast, Southern Urals, Russia)

PL Jambura, SV Solonin, SLA Cooper, EV Mychko… - Cretaceous …, 2024 - Elsevier
Upper Cretaceous coastal marine deposits are widespread in the Southern Urals with a
number of marine vertebrates previously reported from this region. However, previous …

[HTML][HTML] A new cuspidate ptychodontid shark (Chondrichthyes; Elasmobranchii), from the Upper Cretaceous of Morocco with comments on tooth functionalities and …

M Amadori, R Kindlimann, E Fornaciari… - Journal of African Earth …, 2022 - Elsevier
The first articulated dentition of† Ptychodus from Africa is described herein. The specimen,
likely coming from the Turonian of the Asfla area (Goulmima region, southeastern Morocco) …

[HTML][HTML] Late Cretaceous coprolite from the Opole area (southern Poland) as evidence for a variable diet in shell-crushing shark Ptychodus (Elasmobranchii …

D Mazurek, M Antczak - PeerJ, 2023 - peerj.com
Background Coprolites, ie., fossilized faeces, are an important source of knowledge on the
diet and food processing mechanisms in the fossil record. Direct and indirect evidences for …

[HTML][HTML] Articulated remains of the extinct shark Ptychodus (Elasmobranchii, Ptychodontidae) from the Upper Cretaceous of Spain provide insights into gigantism …

PL Jambura, J Kriwet - PLoS One, 2020 - journals.plos.org
Due to their cartilaginous endoskeleton and the continuous tooth replacement, the
chondrichthyan fossil record predominantly consists of isolated teeth, which offer diagnostic …

[PDF][PDF] The occurrence of fossil cartilaginous fishes (Chondrichthyes) within the parks and monuments of the National Parks Service

JPM Hodnett, JS Tweet, VL Santucci - New Mex. Mus. Nat. Hist …, 2022 - researchgate.net
The lands under the jurisdiction of the National Park Service (NPS) have an extensive
chondrichthyan (cartilaginous fish) fossil record that spans temporally all the eras of the …

[HTML][HTML] The Italian record of the cretaceous shark, Ptychodus latissimus Agassiz, 1835 (Chondrichthyes; Elasmobranchii)

M Amadori, J Amalfitano, L Giusberti, E Fornaciari… - PeerJ, 2020 - peerj.com
Associated and isolated teeth of the extinct elasmobranch Ptychodus latissimus from the
Upper Cretaceous Scaglia Rossa pelagic limestone of northern Italy are described and …

A diverse assemblage of Ptychodus species (Elasmobranchii: Ptychodontidae) from the Upper Cretaceous of Ukraine, with comments on possible diversification …

M Amadori, O Kovalchuk, Z Barkaszi… - Cretaceous …, 2023 - research.unipd.it
New isolated teeth from the Upper Cretaceous of Ukraine and belonging to the extinct
durophagous shark Ptychodus are described here. The taxonomic identification of the …