Muscles and muscle scars in fossil malacostracan crustaceans

Klompmaker, Adiël A.; Hyžný, Matúš; Portell, Roger W.; Jauvion, Clément; Charbonnier, Sylvain; Fussell, Shane S.; Klier, Aaron T.; Tejera, Raymond; Jakobsen, Sten L.

doi:10.1016/j.earscirev.2019.04.012

Cited by 15 publications

(10 citation statements)

References 99 publications

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“…Additionally, this specimen contains a number of pits arranged in a circle just anterolaterally to the hepatic pit on the internal mold, not seen in a well-preserved, studied specimen of T. insignis from the Oxfordian of Poland (I-F/MP/6253/1588/11) or any other figured specimens of T. insignis, although the quality of the figures is often insufficient to be sure, so more specimens are needed to confirm this difference. This circle is equivalent to the "hepatic pits", representing antennar extensor muscle attachment scars (Klompmaker et al, 2019), also seen in Eodromites spp. (Starzyk, 2015b).…”

Section: Remarks Morphological Differences Betweenmentioning

confidence: 99%

Systematics and convergent evolution of multiple reef-associated Jurassic and Cretaceous crabs (Decapoda, Brachyura)

Klompmaker

Starzyk

Fraaije

et al. 2020

Palaeontol Electron

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The Late Jurassic marks the first major radiation among true crabs (Brachyura) in reef environments, followed by another diversification in the mid-to Late Cretaceous in multiple habitats. We studied brachyuran carapaces from Mesozoic sponge-and coralassociated limestones in Europe. Six new taxa are described: Late Jurassic Europrosopon gen. nov., Eodromites bernchrisdomiorum sp. nov., Prosopon josephcollinsi sp. nov., Tanidromites nightwishorum sp. nov., and T. weinschenki sp. nov.; and mid-Cretaceous Eodromites cristinarobinsae sp. nov. Furthermore, we recognize four junior synonyms: Eodromites grandis (=E. guenteri), Tanidromites scheffnerae (=T. wysokaensis), and Europrosopon aculeatum (=E. verrucosum and E. barbulescuae). Five taxa are reassigned: Eodromites aequilatus to Tanidromites, Tanidromites rotundus to Eodromites, Nodoprosopon dzhafarberdensis to ?Abyssophthalmus, Nodoprosopon from Nodoprosopidae to Homolodromiidae, and Rathbunopon from Glaessneropsidae to Prosopidae. Several other taxa are redescribed. The latter reassignment indicates that Rathbunopon does not represent an example of extreme convergent evolution as implied previously. Conversely, the frontal structure consisting of a rostrum with two diverging spines and outer orbital spines appears a remarkable example of convergent evolution of the goniodromitid Navarradromites toward members of Homolodromiidae, for which this frontal structure is characteristic. Rostral spines represent another example of convergent evolution. Some specimens are extraordinary: A specimen of Abyssophthalmus cf. A. spinosus represents the largest complete reported Jurassic brachyuran thus far and one specimen of Planoprosopon aff. P. hystricosus bears one of the largest known parasitic isopod-induced swellings (ichnotaxon Kanthyloma crusta) relative to carapace size. Overall, our results indicate that biodiversity and convergent evolution in Mesozoic brachyurans remain understudied.

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Section: Remarks Morphological Differences Betweenmentioning

confidence: 99%

Systematics and convergent evolution of multiple reef-associated Jurassic and Cretaceous crabs (Decapoda, Brachyura)

Klompmaker

Starzyk

Fraaije

et al. 2020

Palaeontol Electron

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“…For the higher classification of fossil galatheoid taxa, Robins et al (2012, 2013, 2016) was followed. For muscle scar and pit terminology, we used Klompmaker et al (2019, figs. 13 and 14).…”

Section: Methodsmentioning

confidence: 99%

“…Muscle scars are not often reported for squat lobsters, but some have been recorded at the base of the mesogastric region (Klompmaker et al, 2019). Such posterior gastric muscle scars are also present in the new species, but another set lateral to the approximate position of the cardiac region (branchial muscles, see Figure 2.2) has not been recorded in the literature from fossil galatheoids thus far.…”

Section: Systematic Paleontologymentioning

confidence: 99%

Systematics of 12 Jurassic, Cretaceous, and Paleogene squat lobster taxa (Galatheoidea)

et al. 2022

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Squat lobsters within Galatheoidea are very diverse with over 1,300 extant species that live in all marine ecosystems, but their fossil record, starting in the Middle Jurassic, consists of only ~200 species. Consequently, much remains to be learned about their biodiversity, phylogeny, and paleobiogeography. We describe five new species (Galatheites sforum n. sp., Kimmeridgian, Late Jurassic, Germany; Vasconilia zapotitlanensis n. sp., Barremian, Early Cretaceous, Mexico; Eomunidopsis texcalaensis n. sp., Barremian, Early Cretaceous, Mexico; Protomunida bennickei n. sp., Danian, Paleocene, Denmark; and Protomunida eurekantha n. sp., Danian, Paleocene, Denmark) and one new genus (Tethysgalathea n. gen., Ypresian, Eocene, Italy). We further reassign Munida cretacea (Albian, Early Cretaceous, Texas, USA) to Galathea?, return Eomunidopsis? cobbani (Campanian, Late Cretaceous, Colorado, USA) to its original genus, report on the second occurrence of Vetoplautus latimarginus Robins et al., 2013 (Tithonian, Late Jurassic, Czech Republic), and reinstate Palaeomunidopsis moutieri (middle Bathonian, Middle Jurassic, France) as the oldest galatheoid known to date. The five new species, all found in limestones containing corals, increase galatheoid diversity in the fossil record by 2.5%. Finally, the common yet hitherto unrecognized Protomunida eurekantha was discovered by making casts of external molds, revealing distinct spines on the posterior margin that are more difficult to see in internal molds and specimens with cuticle due to breakage. Collecting and studying the external molds for galatheoids and other fossil decapods could yield additional cryptic species. UUID: http://zoobank.org/68a25381-65c6-4773-a4f2-71d9b0a25304

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“…They suspect further that Mg-calcite precipitated afterwards, while the sediment was still soft, and protected the individuals and formed the concretions (Jauvion et al, 2019). Klompmaker et al (2019) postulated that muscle tissues in malacostracans are primarly preserved through phosphatization, and because of taphonomic experiments conducted by Briggs and1994) or Sagemann et al (1999), phosphatization (apatite) seems to be the natural way of muscle tissue preservation. However, nearly most of the experiments conducted before were carried out with marine and/or artificial seawater to simulate marine conditions.…”

Section: Figurementioning

confidence: 99%

“…Sagemann et al (1999) also observed replacement of muscle tissue by calcium phosphate inside the shrimp Crangon crangon decaying in artificial seawater, but noticed precipitation of calcite crystal bundles as it is known from the fossil record (Briggs and Wilby, 1996). Klompmaker et al (2019) published the first global data set of exceptionally preserved muscles in malacostracans in the fossil record and postulated that muscles are primarily preserved through phosphatization.…”

Section: Introductionmentioning

confidence: 99%

Calcite precipitation forms crystal clusters and muscle mineralization during the decomposition of Cambarellus diminutus (Decapoda: Cambaridae) in freshwater

Mähler¹,

Janssen²,

Menneken³

et al. 2020

Palaeontol Electron

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The fossilization of soft tissues is generally the replacement of organic structures by pseudomorphs in which muscle tissue is mostly replaced by minerals (i.e., phosphate, carbonate or pyrite). Micro-CT observations of decomposing crayfish in tank and distilled water, show a precipitation of crystal clusters over time. In addition, a mineralized muscle was found by SEM analyses. Raman spectroscopy (CRS) revealed that crystal clusters and the muscle consist of well-ordered calcite. Inductively coupled plasma mass spectrometry (ICPMS) of the distilled water showed a calcium content below the detection limit at the beginning of the experiments, which indicates that most of the calcium ions needed for the precipitation were provided by the decomposing carcasses themselves. Volume measurements of 3D-reconstructed calcite clusters and gastroliths showed a general increase of the volume of calcite clusters and simultaneously volume reduction of gastroliths with progressive decay. Specimens that were in the postmoult phase showed a smaller total volume of precipitated calcite, compared to specimens, which were in the intermoult or premoult phase. In addition, measurements of the total amount of body calcium of Cambarellus diminutus by atomic absorption spectrophotometry (AAS) revealed a higher amount of calcium in individuals without gastroliths than in individuals with gastroliths. It is assumed, that the higher the body size, the higher the volume of precipitated calcite, if the individuals were in the intermoult phase at the time of death. If the individuals were in the postmoult or premoult phase, the phase itself seems to be important.

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Muscles and muscle scars in fossil malacostracan crustaceans

Cited by 15 publications

References 99 publications

Systematics and convergent evolution of multiple reef-associated Jurassic and Cretaceous crabs (Decapoda, Brachyura)

Systematics and convergent evolution of multiple reef-associated Jurassic and Cretaceous crabs (Decapoda, Brachyura)

Systematics of 12 Jurassic, Cretaceous, and Paleogene squat lobster taxa (Galatheoidea)

Calcite precipitation forms crystal clusters and muscle mineralization during the decomposition of Cambarellus diminutus (Decapoda: Cambaridae) in freshwater

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