Insect trace fossils in glyptodonts from Uruguay

Perea, Daniel; Verde, Mariano; Montenegro, Felipe; Toriño, Pablo; Manzuetti, Aldo; Roland, Guillermo

doi:10.1080/10420940.2019.1584562

Cited by 13 publications

(6 citation statements)

References 27 publications

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“…Evidence from extinct fossil species shows that similar lesions were made a very long time ago (late Miocene—Tomassini et al, 2016 ; Quaternary—de Lima & Porpino, 2018 ; Nascimento et al, 2020 ). Perea et al ( 2020 ) show, in their figure 5a, an example of a lesion at a triple junction very similar to those which we have found in the present study in their study of insect trace fossils in glyptodonts—an extinct subfamily of heavily armoured, large armadillos. There have been no prior studies of this pathology to date, but Moura et al ( 2021 ) provide a cartoon (their diagram Figure 4 ) which is directly pertinent to the present study.…”

Section: Discussionsupporting

confidence: 89%

“…Hammond et al (2014) show T. perforans type lesions in an archaeological context in pygmy armadillo (Zaedyus pichiy) osteoderms. Evidence from extinct fossil species shows that similar lesions were made a very long time ago (late Miocene-Tomassini et al, 2016; Quaternary-de Lima & Porpino, 2018;Nascimento et al, 2020) Perea et al (2020). show, in their figure5a, an example of a lesion at a triple junction very similar to those which we have found in the present study in their study of insect trace fossils in glyptodonts-an extinct subfamily of heavily armoured, large armadillos.…”

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confidence: 85%

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Fleas and lesions in armadillo osteoderms

et al. 2023

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Armadillos are bitten by several species of flea. Females of the genus Tunga penetrate the epidermis and when in place are fertilised by males, after which the abdomen swells enormously to form a ‘neosome’. Within the penetrans group, T. perforans, makes lesions that perforate the osteoderms within the integument to form ~3 mm diameter cavities occupied by a discoid neosome. We examined these lesions in carapace material from animals which had died in the wild to see whether we could recruit evidence as to how they may be generated, either by the insect or by the host. We studied one species without such lesions, the nine‐banded armadillo Dasypus novemcinctus, and two species with, the greater hairy armadillo Chaetophractus villosus and the southern three‐banded armadillo Tolypeutes matacus, both showing the characteristic ‘flea bite’ holes in the external surfaces of the osteoderms. Samples were studied by three‐dimensional backscattered electron mode scanning electron microscopy and X‐ray microtomography. Both methods showed resorption pit complexes in the external surfaces of the osteoderms characteristic of those made by osteoclasts in active bone resorption. Lesions involved both the syndesmoses (sutures) between adjacent bones and the central regions of the osteoderms. Many lesions showed extensive repair by infilling with new bone. We conclude that the T. perforans neosome creates a local host response which causes bone resorption, creating the space in which it can grow.

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Section: Discussionsupporting

confidence: 89%

supporting

confidence: 85%

Fleas and lesions in armadillo osteoderms

et al. 2023

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“…Moura et al (2021) noted morphological similarities between the bioerosions present in the osteoderms of Holmesina cryptae and those reported by Lima & Porpino (2018) for Pachyarmatherium brasiliense and Glyptotherium sp. and by Perea et al (2019) for Neuryurus sp. Still, these are more tubular and different in size from Karethraichnus minimum.…”

Section: Ectoparasitismmentioning

confidence: 95%

“…and Pachyarmatherium brasiliense (Lima & Porpino, 2018), Neuryurus sp. (Perea et al, 2019), Holmesina cryptae (Nascimento et al, 2020;Moura et al, 2021), and Chaetophractus villosus, Tolypeutes matacus (Boyde et al, 2023). Other types of lesions, such as infections caused by fungi or bacteria, have been reported for Panochthus sp.…”

Section: Introductionmentioning

confidence: 99%

New exoskeletal material from Bahia provides new evidence of geographic distribution and paleopathology for Quaternary cingulates

Pales,

Porpino,

Scherer

2023

Rev. bras. paleontol.

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The Cingulata clade has a great taxonomic diversity, and its remains are abundantly found in the fossil record of South America, represented mainly by elements from the exoskeleton. Most of the work on cingulate fossils from the Brazilian Quaternary is restricted to taxonomy, while studies on paleobiology, including pathological aspects, are still scarce. This paper describes new exoskeletal specimens and paleopathological evidence for cingulates from Quaternary deposits in Bahia State, Brazil, among the identified taxa (Pachyarmatheriumbrasiliense, Tolypeutes cf. tricinctus, Propraopussulcatus, Glyptotherium sp., Neuryurus sp., Panochthus sp., Hoplophorus cf. euphractus, Pampatheriumhumboldtii, and Holmesina paulacoutoi). Neuryurus is recorded for the first time in the Quaternary of Bahia. Skin lesions, possibly caused by fungi or bacteria, are identified for Panochthus sp. and Glyptotherium sp. In addition, we identified lesions caused by fleas in Glyptotherium sp. These findings underscore disharmonious interspecific relationships involving microorganisms and parasites with glyptodonts, aligning with previous research conclusions. Keywords: Paleobiology, Paleopathology, Cingulata, Quaternary.

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“…This determination extends the stratigraphic range of the taxon at minimum to the Campanian. (Kitching, 1980;Martin and West, 1995;Hasiotis et al, 1999;Ozeki et al, 2020;Perea et al, 2020). The presence of these borings suggests that the turtle bones had a relatively long time of exposure, which was sufficient to allow beetles to posture, but not long enough to allow weathering to destroy them.…”

Section: Stratigraphic and Geographic Distributionmentioning

confidence: 99%

Bioerosion traces on the Campanian turtle remains: New data from the lagoonal deposits of the Quseir Formation, Kharga Oasis, Egypt

El Hedeny,

Mohesn,

Tantawy

et al. 2023

Palaeontol Electron

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The uppermost part of the Campanian Quseir Formation of Kharga Oasis, Egypt, contains a concentration of turtle skeletal remains in a lagoon setting. They appear as three successive horizons (I-III), alternated between the variegated shales and the glauconitic mudstones and conglomeratic layers within the Hindaw Member. However, bones recovered in horizon III present a higher preservation potential than the others. Therein, turtle remains are represented by mostly complete shells, partial shells and many scattered and weathered shell fragments. The studied turtles lived in small ponds and marshes and were deposited as autochthonous to parautochthonous relics. Their bones display significant bioerosion signatures on both carapace and plastron. The morphological analysis of the bioerosion structures preserved revealed 11 ichnospecies, belonging to nine ichnogenera. Eight of these ichnotaxa are recorded for the first time in turtle bones of Egypt. The recognised bioerosional structures appear as borings, shallow chambers, grooves, and punctures produced by ticks, beetles, polychaete worms, fishes/crocodile, and gastropods. They were attributed to the ichnogenera Karethraichnus, Cubiculum, Osteocallis, Radulichnus, Osteichnus, Osedacoides, Sulculites, and Machichnus. In addition, some bite marks assigned to Nihilichnus also occur on a carapace peripheral. This grade of bioerosion was likely caused by relatively long exposure time before the final deposition or burial. In some cases, borings may be produced during the host's lifetime. The new material considerably expands the stratigraphic and geographic distribution of this trace fossil assemblage and reveals that their producers may have been able to survive in other palaeoenvironmental conditions.

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Insect trace fossils in glyptodonts from Uruguay

Cited by 13 publications

References 27 publications

Fleas and lesions in armadillo osteoderms

Fleas and lesions in armadillo osteoderms

New exoskeletal material from Bahia provides new evidence of geographic distribution and paleopathology for Quaternary cingulates

Bioerosion traces on the Campanian turtle remains: New data from the lagoonal deposits of the Quseir Formation, Kharga Oasis, Egypt

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