Epibiont Preservational and Observational Bias in Fossil Marine Decapods

Waugh, David A.; Feldmann, Rodney M.; Crawford, Robert S.; Jakobsen, Sten L.; Thomas, Kyle B.

doi:10.1666/0022-3360(2004)078<0961:epaobi>2.0.co;2

Cited by 39 publications

(36 citation statements)

References 47 publications

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“…Cases recorded in the literature invariably correspond to indeterminate balanomorphs on crabs of the families Majidae (Glaessner 1960), Mathildellidae (Feldmann 2003), Atelecyclidae (Waugh et al 2004) and Cancridae (Feldmann et al 2006). All of these cases correspond to associations of Miocene age, which means that the present case is the earliest report of similar barnacles attached on a decapod crustacean, of more or less comparable age to two balanomorph basal plates on the propodus of an Eocene (Ypresian) Hoploparia gammaroides (M'Coy, 1849) from the London Clay (NHMUK In.35300; see Robin 2015).…”

Section: B C Asupporting

confidence: 52%

The first record of paguroids from the Eocene of Istria (Croatia) and further phylogenetic refinement of the Paguroidea (Crustacea, Anomura)

Gašparič¹,

Fraaije²,

Robin³

et al. 2016

Bull. Geosci.

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A paguroid, Lessinipagurus vasjamikuzi sp. nov., is described from Eocene (upper Bartonian-lower Priabonian) of Istria, on the basis of a single right chela from Gračišće near Pazin, western Croatia. The specimen originates from beds of olistostrome breccias that formed in a bathyal setting. In addition, a new genus, Prexylopagurus, accommodated in the new family Xylopaguridae, is erected; based on a distinctive set of characters of the dorsal carapace, chelae, and operculate tergite of sixth abdominal somite. The phylogenetic relationships of the new family Xylopaguridae are discussed; it appears to have originated in the Tethyan Realm, possibly as early as the Jurassic, and displays a Tethyan distribution during the Cenozoic. Three extant species are transferred to the new genus, resulting in three new combinations: Prexylopagurus anthonii, P. philippinensis, and P. caledonicus. The palaeoecology and palaeobiogeography of the newly erected taxa are discussed. The bloom of diversity of Lessinipagurus during the late Eocene parallels the evolution and subsequent ecological expansion of grasses, especially of reed and bamboo, thus constituting a rare example of coevolution between land plants and marine organisms. The holotype of Lessinipagurus vasjamikuzi sp. nov. shows remains of an interesting syn-vivo balanomorph association; this is the earliest record of such barnacles on a decapod crustacean in the fossil record, and the sole record from an anomuran to date. •

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Section: B C Asupporting

confidence: 52%

The first record of paguroids from the Eocene of Istria (Croatia) and further phylogenetic refinement of the Paguroidea (Crustacea, Anomura)

Gašparič¹,

Fraaije²,

Robin³

et al. 2016

Bull. Geosci.

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“…The most completely preserved specimens contain well-preserved cuticle. However, separation of the part and counterpart of those concretions containing the best preserved specimens typically results in separation of the exocuticle from the endocuticle in the manner described by Waugh et al (2004). Upon examination of the available specimens it appears that the surface of the cuticle is characterised by development of low nodes, as defined by Waugh (2002, fig.…”

Section: Taphonomymentioning

confidence: 96%

“…That specimen, CMzfc46, has at least five balanid barnacles attached on the right and left margins of the branchial region. Placement on the branchial regions is common because it is one of the areas that cannot be groomed by the crab (Waugh et al 2004). Presence of epibionts often seems to be most common on fully mature individuals in which molting is infrequent (Waugh et al 2004).…”

Section: Taphonomymentioning

confidence: 99%

Additions to the records for decapod Crustacea from Motunau and Glenafric Beaches, North Canterbury, New Zealand

Feldmann

Schweitzer

McLauchlan³

2006

New Zealand Journal of Geology and Geophysics

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Concretions collected from Motunau and Glenafric Beaches, North Canterbury, New Zealand, have yielded a new genus and species of crab, Tongapapaka motunauensis of the xanthoid family Pseudoziidae and several specimens of the cancrid crab Metacarcinus novaezelandiae (Jacquinot in Jacquinot and Lucas), confirming its range from Miocene to Holocene. These beaches have yielded numerous specimens of decapod crustaceans, the lobsters and crabs, over the decades, and the composition of the decapod fauna suggests an offshore setting for the Greta Siltstone and Mt Brown Formation exposed at Motunau and Glenafric Beaches, respectively.

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“…Although epibionts are rare on fossil decapods compared to recent decapods, which may primarily be due to preservational biases (Waugh et al 2004), various epibionts have been de-scribed from fossil decapods (e.g. Tshudy & Feldmann 1988, Feldmann 2003, Waugh et al 2004, Feldmann et al 2006, Petit & Charbonnier 2012, Robin et al 2013, 2015c, Hyžný et al 2016.…”

Section: Non-predatory Biological Damagementioning

confidence: 99%

Possible shell disease in 100 million-year-old crabs

Klompmaker

Chistoserdov²,

Felder³

2016

Dis. Aquat. Org.

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Modern organisms exhibit evidence of many diseases, but recognizing such evidence in fossils remains difficult, thus hampering the study of the evolution of disease. We report on 2 molts of the goniodromitid crabs Distefania incerta and Goniodromites laevis from the mid-Cretaceous (late Albian) of Spain, with both species exhibiting damage to the dorsal carapace in otherwise well-preserved specimens. The subcircular to quadratical holes, found in < 0.2% of the specimens, resemble damage caused by bacterial infections on the cuticle of modern decapods in terms of size and shape. Abiotic damage, predation, and encrustation followed by damage to the shell provide less satisfactory explanations, although these agents cannot be completely excluded from a role in shell disease etiology. We hypothesize that the observed fossil lesions are caused primarily by bacterial disease that started prior to molting, with or without other agents of initiation. If correct, this is the only known example of such bacterial infections in decapod crustaceans from the fossil record thus far, pushing back the evolutionary history of this type of shell disease by ~100 million years.

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Epibiont Preservational and Observational Bias in Fossil Marine Decapods

Cited by 39 publications

References 47 publications

The first record of paguroids from the Eocene of Istria (Croatia) and further phylogenetic refinement of the Paguroidea (Crustacea, Anomura)

The first record of paguroids from the Eocene of Istria (Croatia) and further phylogenetic refinement of the Paguroidea (Crustacea, Anomura)

Additions to the records for decapod Crustacea from Motunau and Glenafric Beaches, North Canterbury, New Zealand

Possible shell disease in 100 million-year-old crabs

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